Malicious PDF — malware analysis report

Static analysis result for SHA-256 016ed8bd18ce21ae…

MALICIOUS

PDF

52.8 KB Created: 2020-08-03 11:59:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0ac6d2dfdf406b101e112d5ada43922d SHA-1: eba60e4d2fde7553e6054f4dd58e347cd11d9a36 SHA-256: 016ed8bd18ce21ae3e305675c137d619fa3aa6856ca3e543bf3f338248dc27dd
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous links, many of which point to external resources, indicating a link farm or redirection strategy. The primary malicious indicator is the redirector URL 'https://ttraff.cc/pify?keyword=bakunin+statism+and+anarchy+pdf', which is flagged as malicious. This suggests the document's purpose is to redirect the user to harmful content.

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=bakunin+statism+and+anarchy+pdf
    • http://files.dee-lightful.org/uploads/1/3/1/6/131637163/fiwewurepobese_viratabok_rubodamabuzukiz_gezeraxezawu.pdf
    • http://files.2rcha.com/uploads/1/3/1/8/131856547/mategiguw.pdf
    • http://files.divine-wellness.org/uploads/1/3/1/4/131408899/3783452.pdf
    • http://files.judymartinebooks.com/uploads/1/3/0/7/130740316/9673940.pdf
    • http://files.tracethemitten.com/uploads/1/3/1/1/131164202/fujugusobofi_buvevedukitip.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/5927/2090/files/15476910368.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/99425969244.pdf
    • https://cdn.shopify.com/s/files/1/0428/4035/9068/files/66977632722.pdf
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/gotozetisalomedifanofibi.pdf
    • https://cdn.shopify.com/s/files/1/0435/3975/9259/files/1997_jeep_wrangler_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/2601/4630/files/gikafonusubono.pdf
    • https://cdn.shopify.com/s/files/1/0427/8131/1132/files/wufulekidewexetu.pdf
    • https://cdn.shopify.com/s/files/1/0430/6488/5397/files/1990182664.pdf
    • https://cdn.shopify.com/s/files/1/0431/2625/9876/files/givenexatibawigop.pdf
    • https://cdn.shopify.com/s/files/1/0448/4166/4669/files/go_daddy_whois.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_off0000908f.bin
11f08f86fb64decded728da3cc9d0b4e03dd67b17743be4f13a00585d2b9ce34
pdf-font-stream PDF embedded font (sfnt) at offset 0x908F 5576 bytes
font_01_sfnt_off0000a36e.bin
64601d05c7dfcc38395ae98009724c6844fd9c7a0689c81bc4a477b8e9866c17
pdf-font-stream PDF embedded font (sfnt) at offset 0xA36E 10192 bytes