Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f1dfcaa36a62006…

MALICIOUS

PDF

57.8 KB Created: 2020-08-05 01:41:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cf289f092f0b96ac0432e3a007755306 SHA-1: a856710f13def93d7b34fb4798149d470161a18a SHA-256: 4f1dfcaa36a62006652a7abdc6d95730d59b4e4c2201bc5ac987d8273e460e5a
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

This PDF document contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.ru. The document body text is obfuscated and contains the malicious URL, suggesting the primary purpose is to lure users into clicking malicious links. The ML classifier strongly supports the malicious verdict.

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.ru/pify?keyword=riesgo+relativo+y+razon+de+momios+pdf
    • http://files.armandwright.com/uploads/1/3/1/4/131437601/f6e9372eb.pdf
    • http://files.gingerschultheis.com/uploads/1/3/1/4/131406248/8122546.pdf
    • http://files.spotonseamus.info/uploads/1/3/0/9/130969999/wegewigemajoput_votivazinikejak_xojobizus_vawiwosepeki.pdf
    • http://files.jasonshadbolt.com/uploads/1/3/1/1/131164210/nifunabekipupix.pdf
    • https://cdn.shopify.com/s/files/1/0430/0449/3987/files/62494437691.pdf
    • https://cdn.shopify.com/s/files/1/0433/9472/8103/files/47761939884.pdf
    • https://cdn.shopify.com/s/files/1/0428/8184/3356/files/33676539904.pdf
    • https://cdn.shopify.com/s/files/1/0432/0736/0667/files/nitoxo.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/zuxeraxaru.pdf
    • https://cdn.shopify.com/s/files/1/0434/9162/3074/files/sesirikuw.pdf
    • https://cdn.shopify.com/s/files/1/0438/1874/6013/files/kowejakuzokipuluvafaj.pdf
    • https://cdn.shopify.com/s/files/1/0430/7589/5450/files/pinusunupetema.pdf
    • https://cdn.shopify.com/s/files/1/0438/1645/2258/files/sigabovovelalirolagujuw.pdf
    • https://cdn.shopify.com/s/files/1/0427/7341/4055/files/benulikufosogasenuwized.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/saxon_algebra_2.pdf
    • https://cdn.shopify.com/s/files/1/0431/0079/9140/files/wabefaniluf.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000089f2.bin
73b7f44e39bfa6d983a770ca4be90271880bb5d1867b4b39700504a0098866e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89F2 1604 bytes
font_01_sfnt_off0000920e.bin
3375ca12c2bf9915de61407ab7a62932aa73152af31b65804eb82b7c1ccb36f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x920E 5368 bytes
font_02_sfnt_off0000a450.bin
2eeb09a20f84d37291b5e1ea651144907d6a128f84d3a5bba948a6b6c8b80b44		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA450 11504 bytes
font_03_sfnt_off0000c9ff.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC9FF 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.