Malicious PDF — malware analysis report

Static analysis result for SHA-256 d38668313296f00d…

MALICIOUS

PDF

87.4 KB Created: 2021-03-27 19:59:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: df9533866d0238685225a59d73e3e318 SHA-1: e66698d8b1d9d7b0e7fef4765474443271960a67 SHA-256: d38668313296f00d1c688ec92b1129ced7a54cbed4a18d30b1e838e883a9296a
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many of which point to SEO-optimized PDF files, suggesting a link farm or redirector strategy. The primary URL, 'https://resalured.ru/award?keyword=angle+of+elevation+and+depression+word+problems+with+answers+pdf', is flagged as a high-risk SEO redirector. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious intent to direct users to potentially harmful content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://resalured.ru/award?keyword=angle+of+elevation+and+depression+word+problems+with+answers+pdf PDF link annotation
    • https://s3.amazonaws.com/resisuna/specimen_certificate_of_identity_residence.pdfIn PDF document text
    • https://s3.amazonaws.com/pewebopufupe/banquet_event_order_form_template.pdfIn PDF document text
    • http://pusewuvi.medianewsonline.com/grade_12_biology_textbook_mcgraw_hill.pdfIn PDF document text
    • https://s3.amazonaws.com/dugibabafod/que_es_un_estudio_de_prefactibilidad_de_un_proyecto.pdfIn PDF document text
    • https://s3.amazonaws.com/bupaxomu/hollywood_horror_movies_2015.pdfIn PDF document text
    • http://italy50wow.pro/what_kind_of_battery_does_a_dodge_key_fob_usemgemt.pdfIn PDF document text
    • http://jigikujed.scienceontheweb.net/taking_sides_clashing_views_in_abnormal_psychology.pdfIn PDF document text
    • https://cdn.sqhk.co/duwutawuna/jbnhcib/facebook_logo_aesthetic_red.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/gijufoteripodamitibotemal.pdfIn PDF document text
    • http://fakaripeti.xyz/mendota_fireplace_insert_efficiencyd2nj1.pdfIn PDF document text
    • https://cdn.sqhk.co/jesotipo/icithi0/skylanders_trap_team_villains_wiki.pdfIn PDF document text
    • http://pixunune.sportsontheweb.net/christopher_hitchens_ten_commandments_vanity_fair.pdfIn PDF document text
    • https://s3.amazonaws.com/jinotugiwomo/5597305792.pdfIn PDF document text
    • https://cdn.sqhk.co/gumojitoxowu/vhb4bSq/92598272726.pdfIn PDF document text
    • http://digitaloffice24.ru/gubuvovelawetajilij8qyn.pdfIn PDF document text
    • https://cdn.sqhk.co/rirelolut/bt138ml/53267469221.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/46452366648.pdfIn PDF document text
    • http://instapriz365.site/example_of_introduction_psychology_lab_reportqffdh.pdfIn PDF document text
    • https://s3.amazonaws.com/luropiw/51580207079.pdfIn PDF document text
    • https://cdn.sqhk.co/zotofoza/mhehiFS/nbc_connecticut_ct_live.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tavoxelelenasi.onlinewebshop.net/wii_error_message_50299.pdfIn PDF document text
    • https://1347de4c-4e54-429a-b84c-372e60bc5a2b.filesusr.com/ugd/6c98bc_3728ffcb3759453ab6460f0cc3c2124f.pdf?index=trueIn PDF document text
    • https://e2604e0b-f95a-4acb-b53f-a7db3827b2a1.filesusr.com/ugd/225520_92587f3be36b46b5a7c8a6b872ff56b7.pdf?index=trueIn PDF document text
    • http://memamawu.onlinewebshop.net/cytology_book.pdfIn PDF document text
    • https://091a8774-b5bd-4fb7-8799-8d1ca0ca44ad.filesusr.com/ugd/8716ab_2dbe8c66955b4b57bfb77f6ff00ab80a.pdf?index=trueIn PDF document text
    • https://9eaa565e-fb97-40b4-b096-d6760803f699.filesusr.com/ugd/55e2c6_0131b7f9e876443f84e564c0cc84de70.pdf?index=trueIn PDF document text
    • https://35b1a599-9f45-4897-82ce-59a931fc5495.filesusr.com/ugd/daca0d_0430131adf5745acbbbb199096662b58.pdf?index=trueIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fc43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC43 5736 bytes
SHA-256: 56fbda3d08026b2c05ebfb6cbfc4692ec2eadab8e99374b8d48cb8f5c319733b
font_01_sfnt_off00010fb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FB6 12188 bytes
SHA-256: b169dc92ad74cd6acdd500d087cebedecd7ef015b5998db8240d7cd6a1214dc1
font_02_sfnt_off0001397f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1397F 16184 bytes
SHA-256: 226c7799e08663417c23787dc255f055761e953a3c26422f3c655619641523d2