Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3245fcc9e6c20ed…

MALICIOUS

PDF

42.4 KB Created: 2020-08-11 21:53:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b55a29ac83624ae5948cc5d2d509bbfa SHA-1: 8775ab81b11d26d9a0f32b8b8f68bc74a75f476b SHA-256: b3245fcc9e6c20edd0611ad32a6368d378e1c86dd728492d35b12b97a574568c
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier and contains a critical heuristic indicating it links to known malicious redirector infrastructure. The document body and embedded URLs reveal a large number of links, many pointing to Shopify-hosted PDFs, suggesting a link farm for SEO manipulation. The primary malicious URL identified is https://ttraff.ru/pify?keyword=birth+marked+tome+2+pdf, which likely serves as a gateway to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=birth+marked+tome+2+pdf
    • http://files.barefootfreedomyoga.com/uploads/1/3/2/7/132712315/f70b7d47187d.pdf
    • http://files.scsaast.org/uploads/1/3/1/4/131453522/5229909.pdf
    • http://danedera.tampapanhellenic.com/uploads/1/3/2/3/132303382/jazarawak-rapab.pdf
    • http://files.decatn.org/uploads/1/3/0/8/130813645/kerokumegiwotogef.pdf
    • http://files.pediatricspeechthpy.com/uploads/1/3/1/1/131163718/jovogavemusezowilune.pdf
    • https://cdn.shopify.com/s/files/1/0434/6193/5261/files/bunafuzidexikevow.pdf
    • https://cdn.shopify.com/s/files/1/0428/7417/5644/files/89380694462.pdf
    • https://cdn.shopify.com/s/files/1/0433/8148/9813/files/facebook_ads_formation.pdf
    • https://cdn.shopify.com/s/files/1/0431/0591/0935/files/rise_of_the_guardians_book.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/tukividajikurekuvabefeme.pdf
    • https://cdn.shopify.com/s/files/1/0431/6764/5852/files/jinupagixesugepowekegemu.pdf
    • https://cdn.shopify.com/s/files/1/0435/4398/6340/files/4072550817.pdf
    • https://cdn.shopify.com/s/files/1/0429/6481/1935/files/91962938604.pdf
    • https://cdn.shopify.com/s/files/1/0428/3590/2631/files/62067018071.pdf
    • https://cdn.shopify.com/s/files/1/0440/7197/7110/files/molapefuxozuno.pdf
    • https://cdn.shopify.com/s/files/1/0437/1415/0565/files/lodupimijubopino.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5842/files/xonikuwuvunuwu.pdf
    • https://cdn.shopify.com/s/files/1/0427/3248/6823/files/29765031151.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006876.bin
00457c91644f6ba820031f1bd2c4432f465230436683c0ce4179faee6f26ca83
pdf-font-stream PDF embedded font (sfnt) at offset 0x6876 5316 bytes
font_01_sfnt_off00007a6a.bin
136f4fbe120e1933b207b2948364669c042775abb40c0e4df3adf0015957db8c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A6A 9868 bytes