Malicious PDF — malware analysis report

Static analysis result for SHA-256 e58a2f931be05c51…

MALICIOUS

PDF

45.2 KB Created: 2020-07-31 11:35:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ddb7e65a27e98f04008377251cd0e07 SHA-1: 2b4f1294c12942d6d36811eba1e864463f1abe0e SHA-256: e58a2f931be05c51527e3d1d9a394a0e9d9883dec736299389d3bc4a911933b6
120 Risk Score

Malware Insights

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

The PDF contains embedded links that lead to a redirector service, which in turn points to a link farm of other PDFs. The primary malicious link identified is `https://ttraff.ru/pify?keyword=weight+loss+exercise+routine+pdf`. This suggests a phishing or scam campaign leveraging SEO-optimized PDF lures to drive traffic to malicious sites. The document body, though heavily obfuscated, contains references to 'weight loss exercise routine pdf' and the authoring application 'wkhtmltopdf', reinforcing the 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=weight+loss+exercise+routine+pdf
    • http://files.mrsboecking.com/uploads/1/3/1/8/131871648/79192.pdf
    • http://files.banyantreecounseling.com/uploads/1/3/1/6/131606965/lanusexilogola.pdf
    • http://files.dancoopey.com/uploads/1/3/0/8/130814926/2acdb6fa.pdf
    • http://files.seedsofhope12.com/uploads/1/3/0/7/130739830/3776587.pdf
    • https://cdn.shopify.com/s/files/1/0432/5202/3458/files/tenipim.pdf
    • https://cdn.shopify.com/s/files/1/0428/3141/3414/files/71737765568.pdf
    • https://cdn.shopify.com/s/files/1/0430/6255/8874/files/22842400165.pdf
    • https://cdn.shopify.com/s/files/1/0429/5095/1066/files/94650970230.pdf
    • https://cdn.shopify.com/s/files/1/0429/8306/3715/files/4820893272.pdf
    • https://cdn.shopify.com/s/files/1/0433/4141/4552/files/zufuxezegojopa.pdf
    • https://cdn.shopify.com/s/files/1/0435/9703/7730/files/66175486825.pdf
    • https://cdn.shopify.com/s/files/1/0435/2681/5895/files/41984252241.pdf
    • https://cdn.shopify.com/s/files/1/0427/7318/4678/files/39025955967.pdf
    • https://cdn.shopify.com/s/files/1/0440/4386/2181/files/rofexupuganuno.pdf
    • https://cdn.shopify.com/s/files/1/0431/0876/1764/files/29508119601.pdf
    • https://cdn.shopify.com/s/files/1/0430/1648/7065/files/wavegofaxo.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_off000072d9.bin
39cc584d59abd838bca1f5d88004f3455dfd7a062de9dea2e6bad9a75da9d2ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72D9 5168 bytes
font_01_sfnt_off00008482.bin
9b73f046f76f89acb79e501a50407ba9e6b14cb63ca4e918e1482bb43bdbb636		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8482 10340 bytes

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