Malicious PDF — malware analysis report

Static analysis result for SHA-256 63c8e5864fd62552…

MALICIOUS

PDF

47.0 KB Created: 2020-08-14 22:43:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02a06b9733e244ce12db4a60dc62bb49 SHA-1: 2fe91e3ff45b71624abd6eb54c4e8a121612f117 SHA-256: 63c8e5864fd6255286d01be33c60874dcf73e450994797201988a052998c939c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to a link farm designed to manipulate search engine results. One prominent link, 'https://ttraff.cc/pify?keyword=third+person+shooter+games+pc+free', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL and other Shopify links, suggesting a phishing or scam attempt to drive traffic to malicious sites.

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=third+person+shooter+games+pc+free
    • http://files.jamesleachfineart.com/uploads/1/3/0/7/130776743/babirijov.pdf
    • http://files.pandlcarcare.com/uploads/1/3/1/4/131453493/4250980.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/5026/1911/files/puzolediroz.pdf
    • https://cdn.shopify.com/s/files/1/0430/3293/6605/files/suwenazunodudavowuzof.pdf
    • https://cdn.shopify.com/s/files/1/0430/2520/3354/files/sharkfin_banner_template.pdf
    • https://cdn.shopify.com/s/files/1/0434/1966/4540/files/vovoxesebovegi.pdf
    • https://cdn.shopify.com/s/files/1/0434/8506/9477/files/checkpoint_ccsa_r77_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0437/5547/1006/files/blessing_and_honor_chords.pdf
    • https://cdn.shopify.com/s/files/1/0434/6262/3394/files/67475094517.pdf
    • https://cdn.shopify.com/s/files/1/0433/7801/6421/files/35086801270.pdf
    • https://cdn.shopify.com/s/files/1/0430/6301/7629/files/94968348880.pdf
    • https://cdn.shopify.com/s/files/1/0437/4223/2725/files/37210519288.pdf
    • https://cdn.shopify.com/s/files/1/0455/6773/8021/files/chasing_cars_tab_ukulele.pdf
    • https://cdn.shopify.com/s/files/1/0434/0219/9196/files/calisthenics_mobility_program.pdf
    • https://cdn.shopify.com/s/files/1/0433/0084/7781/files/from_up_on_poppy_hill_kissanime.pdf
    • https://cdn.shopify.com/s/files/1/0429/8581/6218/files/5056663376.pdf
    • https://cdn.shopify.com/s/files/1/0428/2816/9375/files/bunutitagov.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_off000078a0.bin
22a55e7ce92c19d7fd9ea62a172934b50a5dfa7488ee24044c552fc9b272cc2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78A0 5488 bytes
font_01_sfnt_off00008b1d.bin
75140efd6b7a33996800ff9ae392909fd0ab0f54da72a98cb8938dd7cbccd47f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B1D 10376 bytes

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