Malicious PDF — malware analysis report

Static analysis result for SHA-256 301e1770b3810313…

MALICIOUS

PDF

63.6 KB Created: 2020-11-19 02:02:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 8c46d252613d6c0b1465831c9f72e529 SHA-1: d79c0ab1d003d130ee428bb3eb843d9622fdf918 SHA-256: 301e1770b3810313ba6fed81939fe8b6a21cbbf11b0511f5f4863091a3813a34
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 0.9998

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://trafficel.ru/123?utm_term=myteams+by+nbc+sports+apk PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4384639/normal_5fb2b9e8a9c51.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473919/normal_5fa5b7323e3ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384469/normal_5f928268c6575.pdfIn PDF document text
    • https://boxolajabamofi.weebly.com/uploads/1/3/4/3/134356625/pukemunojufugo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482625/normal_5fa969dba3f0c.pdfIn PDF document text
    • https://putigazabikikim.weebly.com/uploads/1/3/2/6/132682718/877f0e1ac7b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/takebemanijewok/naxujokalogoriger.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cb6f4ae-7a29-4f87-bcf1-86ede073ce69/78603711783.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/900cb53b-4f28-4ba2-976e-e5f71533be73/14058692264.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/danafanojag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba89d680-9990-4c15-bae9-1a7de10845b6/nixapixelozitutituvit.pdfIn PDF document text
    • https://s3.amazonaws.com/zedilegol/wepamakebezipikorenafuvit.pdfIn PDF document text
    • https://s3.amazonaws.com/gofilafixu/64204356142.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62885bba-6714-411a-aabe-aaab952f7bd1/34356592345.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd10e7a0-d315-4fa4-8a15-72d5994426e4/tafizugefikotiji.pdfIn PDF document text
    • https://s3.amazonaws.com/pusolefosex/evicted_by_matthew_desmond.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/874ca4f3-5d0e-4c0b-bbfc-cd18dfc13bad/34475929130.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_off0000bb54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB54 5356 bytes
SHA-256: 32813a6d7094f347ce2adf4b4ba6ccf97428486f39c0f2a1c774ffde8c5cc486
font_01_sfnt_off0000cd8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD8B 10572 bytes
SHA-256: 687fe9fed3bcc078449c8cfe022a0db033cc54fc09bcd0c8b8ac617b3485cb9f

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