PDF malware analysis — malicious · 8c0a86420575af6c

MALICIOUS

PDF

40.4 KB Created: 2020-05-25 17:17:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 295fe819e0b96031b82b68fbca8ff083 SHA-1: 53ffaf5e3deec2c92426751ffe624b7180430792 SHA-256: 8c0a86420575af6c0238f85f7f49d45a1b89097737e5f390f059b52076bfa8aa

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

This PDF file was flagged as malicious by an ML classifier with high confidence. It contains a large number of external links, many of which point to PDF files hosted on various domains, suggesting a link farm or SEO poisoning tactic. The primary purpose appears to be redirecting users to potentially harmful content through these numerous external links.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

Heuristics 4

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 http://impactforum.hk/uploads/1/3/0/8/130874197/130874197.html#borderlands+2+level+72+glitch
- http://my-riverside-dui-lawyer.com/uploads/1/3/1/6/131636872/vukuzigax_fibeviw.pdf
- http://sweetlifeyogapilates.com/uploads/1/3/0/5/130550998/5013181.pdf
- http://christmasmarketlacerdanya.com/uploads/1/3/0/9/130969565/3153381.pdf
- http://peruvianparadiseadventures.com/uploads/1/3/0/2/130288887/legogar-vifixi-fafar-pirobegesi.pdf
- http://healthylivingwithcarolyn.com/uploads/1/3/0/5/130551247/0940aeb66.pdf
- http://royal-vapes.com/uploads/1/3/0/2/130292110/guvatukuzupenawoxe.pdf
- http://beaversbendcamping.org/uploads/1/3/0/8/130814441/nosumizab.pdf
- http://autoleagueconsul.com/uploads/1/3/0/4/130489800/7788475.pdf
- http://loophairnews.com/uploads/1/3/1/3/131383515/0b23abedfb9a6.pdf
- http://wildwifenaturalmexicanfoods.net/uploads/1/3/0/5/130590548/1543671.pdf
- http://profunctionalrunning.com/uploads/1/3/1/3/131384336/kuwebekux.pdf
- http://angelsandspiritscall.com/uploads/1/3/1/8/131871488/vurim_xujakojasu_tiwiz_bapolakiriwomo.pdf
- http://portuguese290.com/uploads/1/3/0/7/130740316/5861390.pdf
- http://alnemri.com/uploads/1/3/0/2/130288401/xomujuk-boronavimowos.pdf
- http://wellwellwow.com/uploads/1/3/1/3/131384229/1455012.pdf
- http://zoomylube.com/uploads/1/3/1/3/131378972/wobisexax.pdf
- http://reclaimedglory.com/uploads/1/3/1/6/131606065/821247.pdf
- http://pureheartstoreonline.org/uploads/1/3/1/3/131384575/8691798.pdf
- http://amandaswickle.com/uploads/1/3/0/4/130435684/lalajawupabazin.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/

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006f74.bin` `384da387353e3c3180885dc7f4bd27b85aff65e350697adef1b09a75f0c39cb0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6F74	11096 bytes

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