Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb1bdfe0f7fd6091…

MALICIOUS

PDF

69.7 KB Created: 2021-02-15 16:53:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4e72636b9f34d36359c512cc2600e53d SHA-1: 73049561cf6ab85f35935a34d32990e9c6f4e10d SHA-256: eb1bdfe0f7fd6091e99f97efbb5d86fae86b9511d3e3818691bf1f6545537c09
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=scout+meal+planning+worksheet In PDF document text
    • http://fartook.online/46506033670bxmwt.pdfIn PDF document text
    • http://idealicait.website/microsoft_word_2_sided_business_card_templateubqyg.pdfIn PDF document text
    • http://callup.today/dream_league_soccer_2019_vs_fifa_mobiletqfwn.pdfIn PDF document text
    • https://pejupatuwotim.weebly.com/uploads/1/3/2/8/132814375/d78109bb.pdfIn PDF document text
    • http://itanah.space/band_in_a_box_realtracks_download_frop1hk.pdfIn PDF document text
    • http://meinekarten.best/nimejoxofusebimozozijuki0jkkz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xovajukoxin/canon_pixma_mx492_setup_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/netinuwa/risamenakonorere.pdfIn PDF document text
    • https://s3.amazonaws.com/muvemasoxaji/spanish_to_english_dictionary_app_for_android.pdfIn PDF document text
    • http://jufomotapi.epizy.com/answer_key_in_science_10_unit_4.pdfIn PDF document text
    • https://s3.amazonaws.com/diwitapezu/lurituduzigu.pdfIn PDF document text
    • https://s3.amazonaws.com/wuxupewu/acquisition_of_new_information.pdfIn PDF document text
    • https://s3.amazonaws.com/jotogorurekuro/45082161873.pdfIn PDF document text
    • https://s3.amazonaws.com/donukadizolin/99266258573.pdfIn PDF document text
    • https://s3.amazonaws.com/kiremefegonar/842546892.pdfIn 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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d3ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3CE 5604 bytes
SHA-256: f9f7bb38a3f327737f2d910b8f9d098a9e038e784e564acd1bf1cdcf4beed0a4
font_01_sfnt_off0000e6c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6C1 10392 bytes
SHA-256: cb2e2660c4b9021fb700dcc65bbf43c066946f11b43e55d37b06d02eb11dbc10