Malicious PDF — malware analysis report

Static analysis result for SHA-256 7654f5eb06d15a7e…

MALICIOUS

PDF

80.9 KB Created: 2021-03-05 22:47:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: cd53dce42b7aa7e45020a8568413d742 SHA-1: 73bc9a30792ec9551ce9c8e0a6ee2013c46ad096 SHA-256: 7654f5eb06d15a7e724bdee0e0d0bed2c2bde2abe92ff90506b9a4b73dc9ca2d
186 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous external links, including a link farm hosted on disposable domains, suggesting a tactic to drive traffic to malicious sites. The embedded URL 'https://jottigo.ru/strik?utm_term=panasonic+bread+maker+sd-rd250+review' is a primary indicator of this malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://jottigo.ru/strik?utm_term=panasonic+bread+maker+sd-rd250+review PDF link annotation
    • http://bagerisevi.scienceontheweb.net/29009311603.pdfIn PDF document text
    • http://tafugegajotu.mygamesonline.org/gingerbread_man_story_for_kids.pdfIn PDF document text
    • http://niwizonoleror.mywebcommunity.org/how_to_set_up_kwikset_smartcode_916.pdfIn PDF document text
    • http://rasudilikid.mywebcommunity.org/govubenorexawofowipet.pdfIn PDF document text
    • http://jaxagogilexet.sportsontheweb.net/21094522629.pdfIn PDF document text
    • http://fakurivevid.scienceontheweb.net/xofexasuwaneruzizuke.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/32ee848f-1d2d-44da-af3b-904879e0a31d/92644534082.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb8d7760-33fc-41b6-b149-48f258debac1/lufaloborezegar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c40a3a84-1ff5-4877-8e67-1c0334958861/washing_machine_repair_parts_maytag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2915855f-2e66-494f-ab32-6b1ee948653a/japiguneralepegimefipa.pdfIn PDF document text
    • http://vugugemo.atwebpages.com/92190607712.pdfIn PDF document text
    • https://0a01f052-6ee6-4bfa-868d-d2e49373b03f.filesusr.com/ugd/55f640_88b1e2e069a949ada11f710ac68a9c78.pdf?index=trueIn PDF document text
    • http://govatojajij.epizy.com/zubagez.pdfIn PDF document text
    • https://858e1da1-ad31-4e5b-aec0-89c59c6c71f6.filesusr.com/ugd/6240f8_d7fa24506708476e8d9cc232f1dbac4c.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/af6b3a94-8ca5-4e92-ab02-1334976af834/madumufofedep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2e09fcc-54e6-4f2f-91f7-a823ca18bb09/vozupilibexefoxedovij.pdfIn PDF document text
    • http://sinusudixuxuwad.atwebpages.com/jagej.pdfIn PDF document text
    • http://xozokol.rf.gd/witule.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cad08730-d70f-4cb6-8dc0-de1b1cda8ab8/pasevosonuzaledibu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4a2f4a7-ae45-4f35-8de1-dab15ed4451b/how_to_thread_se600.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d11dc811-0c02-41f5-8098-3c43475ca6b9/streetcar_named_desire_topics.pdfIn PDF document text
    • https://83372c7a-1065-4b07-8284-b64562b46e84.filesusr.com/ugd/035489_e79ee726a26943cd9a41cd4afdee18f6.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000efd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFD6 5548 bytes
SHA-256: 65c628fe3dcb8223ca306259f3334f28d3511273a26aa3795d63abdd5d6dc3da
font_01_sfnt_off000102a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102A0 10740 bytes
SHA-256: 2c3bab518d6777061b6d3f4bf6a5dcf11586bfbf9c8fedefc2647bed2a89979c
font_02_sfnt_off00012748.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12748 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176