Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d84a3e9bad93c02…

MALICIOUS

PDF

43.2 KB Created: 2020-08-14 02:22:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0974145368538894c822ec168b61ad86 SHA-1: 5c4037099914da36e7c03d8775f2d8c33e0b849d SHA-256: 5d84a3e9bad93c02017f15d3e45f22a14908d1f7d2136534a5c25edcde40f7a7
154 Risk Score

Malware Insights

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

The PDF contains a link to a redirector service, which is a common tactic for delivering malicious payloads or phishing pages. The document body and embedded links suggest a lure related to popular search terms, aiming to trick users into clicking the malicious link. The presence of numerous external PDF links further indicates a link farm or SEO manipulation attempt to obscure the true malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.cc/pify?keyword=awadhesh+premi+2019+video++dj
    • http://files.hscfair.com/uploads/1/3/0/8/130814112/529002ee8ac519.pdf
    • http://files.elementssalononline.com/uploads/1/3/1/4/131408142/dd8be4f.pdf
    • http://files.mvcalvarybaptist.org/uploads/1/3/1/6/131606815/wifob-vunajilifa.pdf
    • http://files.myphotobookclub.com/uploads/1/3/0/8/130814774/ruputivarupetaw.pdf
    • http://defimew.seminolecemeteryassociation.com/uploads/1/3/0/7/130738848/f08d5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0447/2363/4330/files/aerogeneradores_de_baja_potencia.pdf
    • https://cdn.shopify.com/s/files/1/0429/5848/7703/files/ganuteximubabudisenape.pdf
    • https://cdn.shopify.com/s/files/1/0433/5383/3637/files/joe_dirt_full_movie.pdf
    • https://cdn.shopify.com/s/files/1/0441/0349/9928/files/86283257734.pdf
    • https://cdn.shopify.com/s/files/1/0432/4166/8775/files/30201992914.pdf
    • https://cdn.shopify.com/s/files/1/0431/7108/6485/files/andile_mngxitama.pdf
    • https://cdn.shopify.com/s/files/1/0430/6308/3162/files/64570989571.pdf
    • https://cdn.shopify.com/s/files/1/0428/2515/4716/files/49378468841.pdf
    • https://cdn.shopify.com/s/files/1/0434/2261/3655/files/31593848549.pdf
    • https://cdn.shopify.com/s/files/1/0446/4400/8099/files/zexobazavezut.pdf
    • https://cdn.shopify.com/s/files/1/0437/4478/8634/files/vexiwepado.pdf
    • https://cdn.shopify.com/s/files/1/0430/0334/7098/files/28397911339.pdf
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006776.bin
1793e7a7cfd50bb93cb32dda60edbf8615759f7564f4863efed890b30e7d337e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6776 5868 bytes
font_01_sfnt_off00007b68.bin
d1a55f65ba9c2f113ec616c7d2e90502d8fda4c6afb4b09f0d3fd85eaf04662b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B68 10772 bytes

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