Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e981f5ea2b2b904…

MALICIOUS

PDF

45.0 KB Created: 2020-08-28 01:42:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c6b3c86521c062b1ba6d70eac4306e62 SHA-1: 83af61274a98be4a66ae721760d72354df905497 SHA-256: 6e981f5ea2b2b9043f93dc3ef80ac5c253a67ed2fcb9c02a357b7c169760f23c
154 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with a critical heuristic firing indicating a link farm and a malicious redirector. The primary malicious URL identified is 'https://ttraff.club/pify?keyword=tongue+of+the+fatman', which is likely used to direct users to malicious content or phishing sites. The presence of numerous links suggests an attempt to distribute malicious content or engage in SEO poisoning.

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/pify?keyword=tongue+of+the+fatman
    • http://gejavune.greenmountainflightacademy.org/uploads/1/3/1/4/131452846/15107a0484.pdf
    • http://files.lincolnlibraryvt.com/uploads/1/3/1/4/131437247/jitam_xudalir.pdf
    • http://files.seedstoharvest.ca/uploads/1/3/1/0/131071082/bfebf3ed011fa0.pdf
    • http://sekivom.dulcetdecibels.com/uploads/1/3/0/8/130814328/numeja.pdf
    • http://figenipe.ddjohnsonassociatesllc.com/uploads/1/3/0/8/130814579/1931964.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0459/8343/2866/files/98558342379.pdf
    • https://cdn.shopify.com/s/files/1/0433/6350/0197/files/wafulurutexizako.pdf
    • https://cdn.shopify.com/s/files/1/0431/4116/9303/files/ajogbajesu_twins_overcomer.pdf
    • https://cdn.shopify.com/s/files/1/0435/0522/1784/files/zomulijesele.pdf
    • https://cdn.shopify.com/s/files/1/0431/7259/3821/files/77811526899.pdf
    • https://cdn.shopify.com/s/files/1/0438/1055/4016/files/mifowituwusafoletelitupu.pdf
    • https://cdn.shopify.com/s/files/1/0454/2306/7304/files/86142726361.pdf
    • https://cdn.shopify.com/s/files/1/0437/7267/4210/files/tudomowadinuzopibefewixu.pdf
    • https://cdn.shopify.com/s/files/1/0448/1653/1617/files/larudoremuzegoletulofobe.pdf
    • https://cdn.shopify.com/s/files/1/0432/0319/9138/files/what_does_efficiency_do_in_minecraft.pdf
    • https://cdn.shopify.com/s/files/1/0428/0002/1667/files/74115999040.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/99250218931.pdf
    • https://cdn.shopify.com/s/files/1/0434/7750/0056/files/mage_the_awakening_free_download.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_off0000724c.bin
3f1fa90df90a236b0c943fb7fe262785516517fdde58916aea8117e92804e6d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x724C 4824 bytes
font_01_sfnt_off00008298.bin
ef72ae7afa0446200d758d2f1187bde1ebd2900aeff647636ff1a0469091bb3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8298 10580 bytes

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