Malicious PDF — malware analysis report

Static analysis result for SHA-256 143c3c77760edf73…

MALICIOUS

PDF

45.4 KB Created: 2020-09-12 01:50:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02c13e9f666473d45ec08f423b600d76 SHA-1: a7a3a54079bab4a44f230b68349bace04e8be3b2 SHA-256: 143c3c77760edf737212dd6ed15421b0ea10efbfe34524aceccf8af71c2f64e4
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating an attempt to lead the user to harmful content. The document body and embedded URLs suggest a lure related to 'Lifetime movie channel tv guide', which is likely a pretext to disguise the malicious intent. The presence of numerous external PDF links, many pointing to benign Shopify URLs, suggests a link farm or SEO manipulation tactic to distribute the malicious PDF.

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.club/wix?keyword=lifetime+movie+channel+tv+guide
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0436/3167/3502/files/cabildo_abierto_en_colombia.pdf
    • https://cdn.shopify.com/s/files/1/0431/0689/3985/files/kozizisaberuwojefi.pdf
    • https://cdn.shopify.com/s/files/1/0433/8991/1194/files/formalism_theory_in_film.pdf
    • https://static.usrfiles.com/ugd/f34823_0c9adf5544f74ed381edba93cf6849ce.pdf
    • https://static.usrfiles.com/ugd/a4e402_fe6dbdc3faa349d7b7df41ef6190505b.pdf
    • https://static.usrfiles.com/ugd/31593d_51fe0e31634d44fca41ff6c12738d51d.pdf
    • https://static.usrfiles.com/ugd/b8c837_fd3659b497844cf6a7dd355e08143771.pdf
    • https://cdn.shopify.com/s/files/1/0434/5135/1200/files/34959029878.pdf
    • https://cdn.shopify.com/s/files/1/0435/3828/4696/files/3612589364.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rejukimuvili.pdf
    • https://cdn.shopify.com/s/files/1/0443/9366/0582/files/caballo_de_troya_9_gratis_completo.pdf
    • https://cdn.shopify.com/s/files/1/0430/3080/6679/files/free_consulting_agreement_contract_template.pdf
    • https://cdn.shopify.com/s/files/1/0437/1379/0106/files/association_rule_learning.pdf
    • https://cdn.shopify.com/s/files/1/0439/8625/6030/files/chennai_express_movie_free_khatrimaza.pdf
    • https://cdn.shopify.com/s/files/1/0439/3664/5275/files/walujiwupoputemid.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_off000073a3.bin
9900ebf0cf12c88905e91dbea4020e412a89af39e9faeff35b72f1f534c9b402		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73A3 5160 bytes
font_01_sfnt_off0000851d.bin
df60537f9088ce3169acf23838c20ae756e3adb6e9fcf323547a645c7d97e217		 pdf-font-stream PDF embedded font (sfnt) at offset 0x851D 10444 bytes

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