Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2e0a8172cd43e0a…

MALICIOUS

PDF

42.2 KB Created: 2020-09-19 13:55:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fb9717ca2421764645473bd18a92c5f9 SHA-1: 0e41d68a3798318e21db950dc584dc2fcd5eb9b2 SHA-256: f2e0a8172cd43e0a2d01446c8d7a77c08ba1f939694374a62a7e358e65b62c93
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.link, disguised as a "bakery business plan pdf". This indicates a phishing or social engineering attempt to lead the user to malicious content. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm used for SEO poisoning or to obscure the final malicious destination. No scripts were extracted, but the primary attack vector is the malicious URL.

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.link/wix?keyword=bakery+business+plan+pdf
    • http://xifem.warp-drive-physics.com/uploads/1/3/0/7/130776436/vatopunorejogozuboz.pdf
    • http://files.marriottediting.com/uploads/1/3/1/4/131453255/1b3e4.pdf
    • http://bazemitef.bluesensation.org/uploads/1/3/0/8/130813366/7112172.pdf
    • http://jesarejif.pascallegovers.nl/uploads/1/3/1/4/131437615/9940c75d4b.pdf
    • https://cdn.shopify.com/s/files/1/0432/5477/5970/files/50219300141.pdf
    • https://cdn.shopify.com/s/files/1/0429/1005/6615/files/74166196798.pdf
    • https://cdn.shopify.com/s/files/1/0433/4393/7690/files/32081391275.pdf
    • https://cdn.shopify.com/s/files/1/0431/4991/8374/files/iupac_nomenclature_of_spiro_compounds.pdf
    • https://cdn.shopify.com/s/files/1/0428/3177/3852/files/4196989986.pdf
    • https://cdn.shopify.com/s/files/1/0428/7083/3319/files/36921274698.pdf
    • https://cdn.shopify.com/s/files/1/0433/0445/2246/files/reportaje_investigativo_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0436/4635/3561/files/nesijeduruzomewof.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006710.bin
fcd56635fd0d277aad774f399d9ee666731f9670064f36fb30b037b9717c6cba
pdf-font-stream PDF embedded font (sfnt) at offset 0x6710 5392 bytes
font_01_sfnt_off0000797b.bin
06cf8568f076a875fa780ccceec8e1848c096441d7172a72cacd47e725521d53
pdf-font-stream PDF embedded font (sfnt) at offset 0x797B 10192 bytes