Malicious PDF — malware analysis report

Static analysis result for SHA-256 7087007b53bb58fa…

MALICIOUS

PDF

41.3 KB Created: 2020-08-12 12:47:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e65d9c7b35341150f217eedaae383090 SHA-1: bd5a53e3a0aa17f660a3c3c638652af8eab008e5 SHA-256: 7087007b53bb58fabd44b624d60f0e493dd3249874d6c3c0f70bac650d3a4d27
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous embedded links, with one prominently pointing to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=1956+cessna+182+poh+pdf'. The presence of a large number of external PDF links suggests a link farm or SEO manipulation tactic. The ML classifier also strongly indicated maliciousness.

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.com/pify?keyword=1956+cessna+182+poh+pdf
    • http://files.foxchapelnewcomers.org/uploads/1/3/1/4/131407734/xatoxerejafej.pdf
    • http://files.3mbluemerlecorgis.com/uploads/1/3/0/9/130969984/zodunisisigoj.pdf
    • http://files.listerpartyrentals.com/uploads/1/3/0/8/130814343/petotalixom_dinux_jejenaki.pdf
    • http://files.chiavacci-cuisine.com/uploads/1/3/2/6/132682882/pevulip.pdf
    • http://files.chiefins.com/uploads/1/3/1/4/131437567/3688f96298b1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/9448/1821/files/seta_baricco.pdf
    • https://cdn.shopify.com/s/files/1/0430/6989/8914/files/85768482107.pdf
    • https://cdn.shopify.com/s/files/1/0429/5730/8063/files/camping_chairs_target.pdf
    • https://cdn.shopify.com/s/files/1/0431/8648/7456/files/45519083538.pdf
    • https://cdn.shopify.com/s/files/1/0432/1024/4256/files/jatigepigibor.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/34530012154.pdf
    • https://cdn.shopify.com/s/files/1/0434/3644/1752/files/reduced_row_echelon_calculator.pdf
    • https://cdn.shopify.com/s/files/1/0435/3759/6580/files/25953946294.pdf
    • https://cdn.shopify.com/s/files/1/0435/6807/0824/files/45253640778.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vewurobafug.pdf
    • https://cdn.shopify.com/s/files/1/0432/9970/0889/files/vivagatadori.pdf
    • https://cdn.shopify.com/s/files/1/0430/0174/1463/files/wejaxaxabisudafaketeratu.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_off00005c18.bin
016a1ce75df97da26d23acc3035c5e523dec1bcde2b5ca280f780dcafc7ba4e6
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C18 5832 bytes
font_01_sfnt_off00006fe1.bin
d8f644c5253e9825c5b11eebb630b368cf90f41f3d52ab84aa92f4797bc05d65
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FE1 12964 bytes