Malicious PDF — malware analysis report

Static analysis result for SHA-256 101a2f5349e4dbfa…

MALICIOUS

PDF

38.1 KB Created: 2020-07-28 20:59:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a438123c54b40af65547e842c7305aeb SHA-1: a0a109fe7d24b9125ae8860bb532c8f0404643f5 SHA-256: 101a2f5349e4dbfaf5869fb39d334469783836552f3b0c2792eea55366cd5faf
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, appears to be a lure related to a vehicle owner's manual. The presence of a link farm and a critical heuristic firing for malicious redirector links strongly suggests an attempt to direct users to harmful websites.

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=2015+gmc+acadia+sle+2+owners+manual
    • http://files.turkanagemasycristales.com/uploads/1/3/0/7/130776344/459e0c.pdf
    • http://files.hollyrihn.com/uploads/1/3/0/7/130739015/1565663.pdf
    • http://files.mjohnandson.com/uploads/1/3/0/8/130814643/dutubamemebosasizel.pdf
    • http://files.poppingforparkinsons.com/uploads/1/3/2/6/132695569/bibalew_tusoferiv.pdf
    • http://files.tsunami-softball.com/uploads/1/3/0/9/130969429/dekusumitezu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/2817/5255/files/31791964733.pdf
    • https://cdn.shopify.com/s/files/1/0430/1278/4277/files/62371239634.pdf
    • https://cdn.shopify.com/s/files/1/0439/0469/6472/files/suvekokowiwuf.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/benubojebexoreloruva.pdf
    • https://cdn.shopify.com/s/files/1/0433/2270/4030/files/wilimirogidazowovej.pdf
    • https://cdn.shopify.com/s/files/1/0431/0306/0128/files/48968084241.pdf
    • https://cdn.shopify.com/s/files/1/0434/2064/7576/files/warapeda.pdf
    • https://cdn.shopify.com/s/files/1/0431/8471/7979/files/33781275365.pdf
    • https://cdn.shopify.com/s/files/1/0430/7730/4481/files/13293325429.pdf
    • https://cdn.shopify.com/s/files/1/0433/2647/2345/files/67682895220.pdf
    • https://cdn.shopify.com/s/files/1/0436/4691/0617/files/jogiditodoxa.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_off0000568e.bin
8391749cce0799c439223c9e4ebd423808a7fde9837fb514067cfc2771eba25a
pdf-font-stream PDF embedded font (sfnt) at offset 0x568E 5508 bytes
font_01_sfnt_off0000692c.bin
09f885e19392113fdc02d1646c3789c933bcb52ab7a56e0156144c8cd86d3afa
pdf-font-stream PDF embedded font (sfnt) at offset 0x692C 10008 bytes