Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d1850827e4535c7…

MALICIOUS

PDF

72.3 KB Created: 2021-03-06 10:46:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 074df0fc6810c4049dced3200c0c1441 SHA-1: 53a76859bac6ec7e8af5bd0a3be96dbd0557b6c7 SHA-256: 2d1850827e4535c770b9a672be6be17082a6a1d6a70e6ac1d3c039f82686c9e3
156 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9991

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://xajibur.ru/aws?utm_term=rcbs+the+grand+progressive+shotshell+press+for+sale PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4385424/normal_5feebe590c488.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408873/normal_6000783c807aa.pdfIn PDF document text
    • http://fomizedo.iblogger.org/satadevunepibik.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454822/normal_603ef9ce152da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409413/normal_5fd7867f66c10.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411273/normal_5ff7a39020e63.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485705/normal_6023d10fc7e12.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383698/normal_600937678d276.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389816/normal_5ffe4a6f1a893.pdfIn PDF document text
    • http://vodabezoli.iblogger.org/css_transform_antialias_text.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451368/normal_5feb3fcc725b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469353/normal_600f2f3a48065.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368489/normal_5fe50b1733721.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458404/normal_5fecb415344dd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d5f1d3db-1598-48d0-a061-764c190a6564.filesusr.com/ugd/866690_fa8c83a98a934f5da001de0d5dd8ca4b.pdf?index=trueIn PDF document text
    • http://pupuwejerew.epizy.com/baxixudemujogu.pdfIn PDF document text
    • https://bef89f6e-6323-4b84-ad9d-a44490bfcc4f.filesusr.com/ugd/96768c_504a53356c7e45f1a2fbc497fc4643cd.pdf?index=trueIn PDF document text
    • https://35548484-ce42-4b18-9d9d-834326683263.filesusr.com/ugd/a221b6_91f242d3d18c4531b0acdad6eaf0033d.pdf?index=trueIn PDF document text
    • http://mogivinisisa.epizy.com/81573483493.pdfIn PDF document text
    • https://s3.amazonaws.com/xafaxotaful/61120968625.pdfIn PDF document text
    • https://1c985592-4fe2-425a-b8d2-7dc24782370c.filesusr.com/ugd/a13bc2_52d98b527887440fab7841033fead86c.pdf?index=trueIn PDF document text
    • https://128fc002-9ed4-4a8f-9a6b-83b43563a9ed.filesusr.com/ugd/6812d7_1c5acf1cd8da42278cb5d4d3fe4fbd0a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bopuxosavubare/ziguju.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/32562753535.pdfIn PDF document text
    • https://s3.amazonaws.com/xidazeze/claim_form_l_g.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000daf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAF9 5624 bytes
SHA-256: f3b4e0a8bae7a0f587c5af1cb8f282afe2a935bef31ba1665ad94ae5da9f1674
font_01_sfnt_off0000ee18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE18 10340 bytes
SHA-256: 0baf16845bc9b89d292625223633c4840d5c250d5ec11c297d8b01a4021d8c95

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