Malicious PDF — malware analysis report

Static analysis result for SHA-256 7670b030a46ec60c…

MALICIOUS

PDF

79.8 KB Created: 2021-03-21 23:03:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1fb227960e5a2198b538760d26268c94 SHA-1: 2706b91b63012208da73e9a497c4e1626710914d SHA-256: 7670b030a46ec60ce3d26b9536774ffab54bef7453c94d3f4d8944cf5e2121c3
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for Pdf.Phishing.Trojan. The PDF contains a large number of external links, suggesting it is part of a link farm or SEO manipulation scheme. The primary malicious URL identified is https://lozipotod.ru/award?keyword=anestesia+raquidea+y+peridural+pdf, which is likely used to direct users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/award?keyword=anestesia+raquidea+y+peridural+pdf
    • https://static.s123-cdn-static.com/uploads/4370072/normal_600549fec3543.pdf
    • https://static.s123-cdn-static.com/uploads/4381551/normal_5fe58c33d38e9.pdf
    • https://static.s123-cdn-static.com/uploads/4471988/normal_5fcea15ab3d05.pdf
    • https://cdn-cms.f-static.net/uploads/4368503/normal_603c1660dc672.pdf
    • https://static.s123-cdn-static.com/uploads/4415080/normal_5ff78847c7d0c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://45f61934-b4a1-4335-a9e3-e142d9465b5b.filesusr.com/ugd/0dd040_e58f57e84e5940f08e2cc2a6292d690e.pdf?index=true
    • https://cd9ed9ec-87d1-42be-9198-0b2de6c1db4d.filesusr.com/ugd/158fb9_81c65c3bc27b4448acad617ec793c37a.pdf?index=true
    • https://f495c71d-628d-4070-9a3d-b699cbb46ba4.filesusr.com/ugd/d99ef3_914c3489180e4c7eb44c674298ac23e9.pdf?index=true
    • https://901c4554-6fda-40bf-8344-1f1538f5dc06.filesusr.com/ugd/a76634_d044308bc0e84dc68097675873db5910.pdf?index=true
    • https://176fe727-baa2-4f6f-8ab0-cddcd97ecb74.filesusr.com/ugd/45df28_92e6f70b92f14576960a7787c6023915.pdf?index=true
    • https://s3.amazonaws.com/rorives/craftsman_gold_6.75_lawn_mower_190cc_price.pdf
    • https://6c8ebe11-725c-420b-823a-68bc39d02ad2.filesusr.com/ugd/3e87bf_1c6bef9dbc9444868b50a6db929fa06f.pdf?index=true
    • https://s3.amazonaws.com/lopadivupudexa/1298595905.pdf
    • https://45dcde1a-aed5-4138-b95e-a0f768a283bf.filesusr.com/ugd/89441e_01c612e93a3048b98c76f369496057a7.pdf?index=true
    • https://26577e91-18e8-42c3-8e85-49dcca1d6605.filesusr.com/ugd/195787_48bd830e9cd543d492e09420739a2746.pdf?index=true
    • https://bb74f61c-7045-47bf-9a7e-968101ee373e.filesusr.com/ugd/81ef4b_9a2c46f8af5849929aa1bf1b71374635.pdf?index=true
    • https://0a3c8164-ddd9-4522-8472-457ce31ece15.filesusr.com/ugd/d32f78_bdc0fe8c75304d04b8ee61d3fd3d9b1f.pdf?index=true
    • https://s3.amazonaws.com/jolituzoji/15813402365.pdf
    • https://s3.amazonaws.com/satudifin/89865143196.pdf
    • https://s3.amazonaws.com/feborobegibew/how_to_attend_a_boiler_room_event.pdf
    • https://2ddf8be6-044d-4f30-b6fd-16c032829cd6.filesusr.com/ugd/9827ea_d872dc12f0934c4c970a19b710746aec.pdf?index=true
    • https://18e99e0c-7034-4a8c-9069-267580a295b8.filesusr.com/ugd/b337f5_afcbbbd68835456ba019641f85ac8134.pdf?index=true
    • https://69a21580-3c80-4f81-8097-1ec0bc18215d.filesusr.com/ugd/bd7df1_a45e0c7608be4a0989b917bf86573344.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8ff.bin
3a27176c47a75454321a48020434bf5dceff12ba0afe9c5f3156ed79f6e9ec05		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE8FF 5024 bytes
font_01_sfnt_off0000fa18.bin
d49d5b57fd4279144566c215fff99e823c2d995f7fb3dbbbb68c9fbf91d6ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA18 12136 bytes
font_02_sfnt_off000121ae.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x121AE 4324 bytes

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