Malicious PDF — malware analysis report

Static analysis result for SHA-256 305a71a90ab0544a…

MALICIOUS

PDF

45.7 KB Created: 2020-08-19 02:17:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b05983ac950d39f9c83de2579c1fc15 SHA-1: 183d0a9506c0ee10dfbd2620604fedec3f86ebf6 SHA-256: 305a71a90ab0544ac0b3094e64ca09eb87ba52f3b66853cef9d818230081d5f5
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many pointing to external PDF files hosted on various domains. One of these links, 'https://ttraff.ru/pify?keyword=chaussures+compens%25C3%25A9es+plateforme+femme', is flagged as a malicious redirector. The presence of a large link farm suggests an attempt at SEO manipulation or distributing malicious content. No scripts were extracted, and the document body is heavily corrupted, limiting further analysis of the specific lure.

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=chaussures+compens%25C3%25A9es+plateforme+femme
    • http://files.azeyemds.org/uploads/1/3/1/4/131437380/389fc93738.pdf
    • http://rowimap.greathorwoodhistory.org/uploads/1/3/0/8/130814172/6140163.pdf
    • http://files.devonicity.ca/uploads/1/3/2/7/132740361/xolimumofumatib-kenute-kolorunul-nogefexib.pdf
    • https://cdn.shopify.com/s/files/1/0432/5693/8646/files/govefaxejuzepewix.pdf
    • https://cdn.shopify.com/s/files/1/0433/2116/3941/files/fajazuvekobenifefo.pdf
    • https://cdn.shopify.com/s/files/1/0430/2028/8153/files/60517408588.pdf
    • https://cdn.shopify.com/s/files/1/0437/0294/3909/files/livitevozoverijujurelod.pdf
    • https://cdn.shopify.com/s/files/1/0435/7154/4225/files/6111310852.pdf
    • https://cdn.shopify.com/s/files/1/0432/6539/2804/files/tekexizetiwidize.pdf
    • https://cdn.shopify.com/s/files/1/0430/3916/2522/files/74631381287.pdf
    • https://cdn.shopify.com/s/files/1/0432/3488/5792/files/micah_stampley_our_god.pdf
    • https://cdn.shopify.com/s/files/1/0434/6360/6429/files/python_exponential_function.pdf
    • https://cdn.shopify.com/s/files/1/0431/8802/7555/files/merit_badge_worksheet_personal_management.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/peseniwav.pdf
    • https://cdn.shopify.com/s/files/1/0431/1570/8577/files/15831263415.pdf
    • https://cdn.shopify.com/s/files/1/0432/3144/5156/files/55161745968.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_off00006531.bin
ebe312a35e3aa37458aff59b7026658b7043f76c2375bbfc6a40eef5ccc57196		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6531 5300 bytes
font_01_sfnt_off000076cc.bin
99befbe5804898316c1c2f5ac6ed590b7770b9c98514c091947337579506eccd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76CC 16124 bytes

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