Malicious PDF — malware analysis report

Static analysis result for SHA-256 80663e853f17a090…

MALICIOUS

PDF

47.2 KB Created: 2020-08-02 20:41:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79a7fa33729109239678c1185979109a SHA-1: 6818345e9de6536bf3aca29a34be92fee84f5039 SHA-256: 80663e853f17a0905136f9a1148ed81dbd8ee0073879e2f5231453514077bf6a
154 Risk Score

Malware Insights

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

The PDF contains numerous links, including one identified as a malicious redirector (https://ttraff.ru/pify?keyword=iching+book+of+changes+pdf). The document body and embedded links suggest a lure related to 'Iching book of changes pdf', likely intended to trick users into clicking through to malicious content. The presence of many external PDF links also indicates a link farm, a common tactic for SEO manipulation and distributing malicious content.

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.ru/pify?keyword=iching+book+of+changes+pdf
    • http://files.starfishswimmers.com/uploads/1/3/1/3/131379246/7a78f01839485.pdf
    • http://files.henandchickdolls.com/uploads/1/3/1/0/131070711/66c1b9.pdf
    • http://files.actresscaitlinjackson.com/uploads/1/3/0/7/130775432/koraxo.pdf
    • http://files.adamsstringshack.com/uploads/1/3/0/7/130740563/7290730.pdf
    • http://files.flattailpress.com/uploads/1/3/0/8/130874627/7348d7c52608ad2.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/0436/9816/files/1839882047.pdf
    • https://cdn.shopify.com/s/files/1/0434/0819/5738/files/29260121498.pdf
    • https://cdn.shopify.com/s/files/1/0433/8073/6151/files/fubodofudo.pdf
    • https://cdn.shopify.com/s/files/1/0429/0487/9267/files/84859155285.pdf
    • https://cdn.shopify.com/s/files/1/0431/7813/1611/files/34273057241.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tobilefoseparavako.pdf
    • https://cdn.shopify.com/s/files/1/0431/0558/3266/files/52410661276.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/71052884609.pdf
    • https://cdn.shopify.com/s/files/1/0435/2838/8772/files/24169972529.pdf
    • https://cdn.shopify.com/s/files/1/0430/7877/9047/files/wolin.pdf
    • https://cdn.shopify.com/s/files/1/0435/9146/7176/files/gamisuwewubigoz.pdf
    • https://cdn.shopify.com/s/files/1/0435/1528/1568/files/lindsay_lohan_nude_selfie.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_off00007a25.bin
a68426b98db76175f9dea48e2f920b7249bd8daa9e9e400a0cc061212db64e7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A25 5432 bytes
font_01_sfnt_off00008ca0.bin
bf7ba7d42e191e805cb7205244f34a6aae0fedf9be09947c9103cae3e3d18dd9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CA0 10324 bytes

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