Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a000d1701778794…

MALICIOUS

PDF

84.3 KB Created: 2020-12-19 21:28:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 77af115026cd11eb8f66adb68962cff2 SHA-1: 3b61f801a3a29067f0cb1374de322cf5cc2d1352 SHA-256: 4a000d17017787944b12fbccf6ecda707430f394d87e15d37636f5f57bd01573
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous external links, with one critical heuristic identifying it as a link farm. The primary malicious URL, https://traffking.ru/strik?utm_term=the+22+immutable+laws+of+marketing+pdf+%25D9%2585%25D8%25AA%25D8%25B1%25D8%25AC%25D9%2585, is likely used to redirect users to a phishing or malware distribution site. ClamAV also detected this file as Pdf.Phishing.Trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • 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://traffking.ru/strik?utm_term=the+22+immutable+laws+of+marketing+pdf+%25D9%2585%25D8%25AA%25D8%25B1%25D8%25AC%25D9%2585 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4478383/normal_5fbf0172d8601.pdfIn PDF document text
    • https://xujopikaxatanow.weebly.com/uploads/1/3/4/8/134850499/dobiso.pdfIn PDF document text
    • https://toguxiwo.weebly.com/uploads/1/3/4/6/134645105/xolomevokenon.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454547/normal_5fc9dc93b609a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/fac3f753-1d09-4cf8-9a8f-fbfde7bee5a8/38900644775.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74318b9c-4fe3-4ebf-bf40-6b673e584728/31479369036.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/598dcd22-9d10-4208-abc4-bec70934c4a5/xurodadodag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c803a57-7088-4271-a893-66bea04b4159/wanozasaw.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5d3e7a87939686429f1a7/t/5fcff2e41b1df534f023928e/1607463653273/6490635175.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/45920845139.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc066bd9955c744b5390948/t/5fc0d95bfa04221c713f8f69/1606474075683/warlords_2_rise_of_demons_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c6119bb-d3e3-44cf-b7df-e9323da80890/88327386770.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21d2f47e-ddbd-4f01-a20a-2dbb6085980f/brs_physiology_8th_edition_amazon.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00011757.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x11757 23808 bytes
SHA-256: 4c9bf4d2062691281e7877878908b39c3ed61e2ab112d836fbf2f742a0df7ef5
font_00_sfnt_off0000c860.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC860 5832 bytes
SHA-256: 412fcafe78ccd94a5500351aee548355e6de195e7041a41be48d71580ad4a6fd
font_01_sfnt_off0000dc19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC19 10400 bytes
SHA-256: 8f5187cae1f9284de2f1f26cc0f8fcc1864ec3b7ff29814070af9003b8c906c5
font_02_sfnt_off0000ffe9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFE9 16728 bytes
SHA-256: f5a49d6360b99a3e06b0c4bb5fc4185d0ea9ec4d22c768eedf1360a78d8c1f8f

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