Malicious PDF — malware analysis report

Static analysis result for SHA-256 01b3094be005755b…

MALICIOUS

PDF

61.8 KB Created: 2020-08-01 11:07:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d237198a1d8bb255f393d8cc79362ebd SHA-1: dcaa8c6d6721bfca6bb66f57a390c67a26640e02 SHA-256: 01b3094be005755b7685325008307f0ea43affc8e4ded4effe58d54fee324183
154 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1204.002 Malicious Link

The PDF contains embedded links, one of which points to a redirector URL that is known to host malicious content. The document body also contains text related to downloading cracked MP3s, further indicating a lure for potentially harmful downloads. The ML classifier strongly flagged this PDF as malicious.

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=2+chainz+crack+mp3+free+download
    • http://files.purlieulandscapes.com/uploads/1/3/0/8/130874109/zelisovez.pdf
    • http://files.counselingwithcatherine.com/uploads/1/3/1/0/131070313/d93fc25f4b077.pdf
    • http://files.calone.studio/uploads/1/3/1/8/131857562/zoxoketebesabokone.pdf
    • http://files.food4winners.com/uploads/1/3/2/8/132814302/c21d6688503.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0427/5575/2103/files/4096275827.pdf
    • https://cdn.shopify.com/s/files/1/0427/8901/1612/files/murisax.pdf
    • https://cdn.shopify.com/s/files/1/0438/4587/7922/files/3124985273.pdf
    • https://cdn.shopify.com/s/files/1/0431/4506/8699/files/95401398211.pdf
    • https://cdn.shopify.com/s/files/1/0433/0363/3051/files/99090435570.pdf
    • https://cdn.shopify.com/s/files/1/0434/0118/3384/files/wozebuvalujodafo.pdf
    • https://cdn.shopify.com/s/files/1/0431/1213/6855/files/55160520965.pdf
    • https://cdn.shopify.com/s/files/1/0432/4448/6811/files/pudiximola.pdf
    • https://cdn.shopify.com/s/files/1/0430/8051/5745/files/67237381637.pdf
    • https://cdn.shopify.com/s/files/1/0440/6401/4501/files/xalezod.pdf
    • https://cdn.shopify.com/s/files/1/0430/0737/7567/files/13037583788.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007e98.bin
ae8d2acfdfed5e0cab7ffd0f89e2b93cf5cac7d46769ba2cb95fa489e576a3d6
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E98 17172 bytes
font_01_sfnt_off0000b4af.bin
81832a330bfffdd0e8bcde75d99bfebce83573d6a59ee9abbe938a18435d7909
pdf-font-stream PDF embedded font (sfnt) at offset 0xB4AF 5624 bytes
font_02_sfnt_off0000c7c1.bin
a92c4b5020582bb347192f2808c75b3f95d618c54794e18855bc511b42c7835f
pdf-font-stream PDF embedded font (sfnt) at offset 0xC7C1 9948 bytes