Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f0a2e3c69db8b6a…

MALICIOUS

PDF

87.3 KB Created: 2021-04-23 23:01:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: ab20be16c1638edcb8dd4c0e263c7971 SHA-1: dffca8a3ed57bdd9d76b63cfe802fe9c57ffda7f SHA-256: 2f0a2e3c69db8b6aae6f44ead284466f5ac82c81ef8a4bba304dafc687b93b84
186 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://lozipotod.ru/strik?utm_term=the+heir+of+memories+trophy PDF link annotation
    • https://cdn.sqhk.co/noxomosanena/shbigBS/vuwifawixarik.pdfIn PDF document text
    • https://cdn.sqhk.co/labifikup/ohdCazE/81519029495.pdfIn PDF document text
    • https://cdn.sqhk.co/jotenitix/Thijc40/51176156639.pdfIn PDF document text
    • https://cdn.sqhk.co/gerezowuves/gdih6hd/munuvotobewoxake.pdfIn PDF document text
    • https://kukibutojiw.weebly.com/uploads/1/3/0/7/130775835/e048f77421bc7c3.pdfIn PDF document text
    • https://cdn.sqhk.co/vadetegubufo/O4ijErk/ding_ding_ding_correct_gif.pdfIn PDF document text
    • https://cdn.sqhk.co/dedikifefisu/h3ieggS/hollywood_hd_movies_links.pdfIn PDF document text
    • https://cdn.sqhk.co/muvenetu/Tahf9Dl/15988212988.pdfIn PDF document text
    • https://bugukafu.weebly.com/uploads/1/3/4/4/134490359/7b20c.pdfIn PDF document text
    • https://cdn.sqhk.co/metajewamiva/MgjhaS3/learning_spanish_for_beginners_free.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://601bead5-a720-4f65-98db-62fe2a42cb91.filesusr.com/ugd/0e52b4_ac20487d2b084f88a0a5f3036e4a6dd0.pdf?index=trueIn PDF document text
    • https://3b044092-e341-4c69-a8e2-52b14fc1865f.filesusr.com/ugd/370021_90fd58eb65f442d9920f02709f15bfb6.pdf?index=trueIn PDF document text
    • https://72b50e20-f79f-40ca-96b4-24bef83e308f.filesusr.com/ugd/1a1092_d2dc95050790408cb1493ebdde8b6cfb.pdf?index=trueIn PDF document text
    • https://d03ec42c-8b93-48d3-a61e-9aee396c0db4.filesusr.com/ugd/1e557c_f806bda5c72e45f5ae32d4796745c419.pdf?index=trueIn PDF document text
    • https://6f847715-c85a-45d9-ae5c-7c68cc800588.filesusr.com/ugd/6e100b_0b80ec3300f345478684174094f43500.pdf?index=trueIn PDF document text
    • https://9e730ba1-499c-413e-9a09-8a81f8121270.filesusr.com/ugd/0a0016_198b6024ad5340fea7f3f8b89b427a51.pdf?index=trueIn PDF document text
    • https://21319658-e817-4d6a-846f-872ccfe0f0c2.filesusr.com/ugd/982af2_f98cc1d5874547a5a9ec4acd4cebee30.pdf?index=trueIn PDF document text
    • https://6b5d12f1-3bbc-48af-9ddb-5430d2fe15e7.filesusr.com/ugd/3bf302_368dcba009f84264996ec2c94101c8bb.pdf?index=trueIn PDF document text
    • https://d992f69e-bc5b-430a-92d7-abfd66d0380b.filesusr.com/ugd/6f7357_ca82984e618d491c8c95dbfc76aa70b2.pdf?index=trueIn PDF document text
    • https://abbf68a8-5b21-4996-91be-11266bd273ed.filesusr.com/ugd/9374a7_d51bec3d17de4ad1be06f913e88dfe89.pdf?index=trueIn PDF document text
    • https://6a24fdd2-d4a5-4c4b-882b-0f3115751bcf.filesusr.com/ugd/04e6f9_d0d2da4b7f7d44449b3b8ad06873d310.pdf?index=trueIn PDF document text
    • https://144c9d4d-401b-437b-b89f-6a5816d7da47.filesusr.com/ugd/cd33f5_309a285329b846e69a0c9da0938c8ef4.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_off0001092e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1092E 4632 bytes
SHA-256: 18be294728b241c1d6eac6ffbbc19481c0b7a120d394c6e225b44410e464d6ab
font_01_sfnt_off000118f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118F5 12652 bytes
SHA-256: 2dcca88878fd92eb2c3ad7c506a2bf14796bc476024e58f9c7a7fcb2f2254c6f
font_02_sfnt_off000141bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x141BF 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

Open this report in the interactive analyzer, or submit your own file for analysis.