Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2e671afda033766…

MALICIOUS

PDF

44.1 KB Created: 2020-08-03 14:48:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c72c4c078dc38a163848f1e2e66fde4f SHA-1: b4caebb8c127267ed86b939a3fd228363c47ec03 SHA-256: e2e671afda033766be08b7666f0763783f566881a74bbf64d95b091eb52ba05d
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically 'https://ttraff.cc/pify?keyword=adulteration+in+butter+pdf'. Additionally, it exhibits characteristics of a PDF link farm, embedding a large number of external links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the same malicious URL, suggesting the primary intent is to redirect the user to malicious infrastructure.

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.cc/pify?keyword=adulteration+in+butter+pdf
    • http://files.aimeebrackenphotography.com/uploads/1/3/0/8/130874521/39d129d.pdf
    • http://files.irfannooruddin.org/uploads/1/3/1/4/131482884/8785152.pdf
    • http://files.potomacusa.com/uploads/1/3/2/6/132681749/bajaxabiluvivuz-goxavokemofe-biwolema.pdf
    • http://files.micheleroldanshaw.com/uploads/1/3/0/7/130776158/bidepomewujususudaza.pdf
    • https://cdn.shopif
    • https://cdn.shopify.com/s/files/1/0436/1597/7630/files/brown_skeletal_horse.pdf
    • https://cdn.shopify.com/s/files/1/0429/1615/1462/files/31579406679.pdf
    • https://cdn.shopify.com/s/files/1/0437/6241/7825/files/jawusokunoz.pdf
    • https://cdn.shopify.com/s/files/1/0428/7981/1750/files/60809383749.pdf
    • https://cdn.shopify.com/s/files/1/0430/7045/5957/files/bomekozepafiji.pdf
    • https://cdn.shopify.com/s/files/1/0429/1434/9215/files/nefarofiv.pdf
    • https://cdn.shopify.com/s/files/1/0431/3533/6605/files/fodugipadisupupafif.pdf
    • https://cdn.shopify.com/s/files/1/0433/5756/9189/files/93748220941.pdf
    • https://cdn.shopify.com/s/files/1/0433/4059/5352/files/using_windows_terminal.pdf
    • https://cdn.shopify.com/s/files/1/0429/1588/9305/files/wotobusefotasuvuxudore.pdf
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/lexinuxufo.pdf
    • https://cdn.shopify.com/s/files/1/0434/2136/8482/files/57814706165.pdf
    • https://cdn.shopify.com/s/files/1/0433/4888/5662/files/4426853105.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_off000070dc.bin
90ab8aa78f4ac7bd3d695f64dbe200caf7099c7a94c2a3e665ed89463a82e97e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70DC 4984 bytes
font_01_sfnt_off000081d7.bin
621f5a43cdfa2eab62094645c7ef0000bbfb779e97de50996825fec503549704		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81D7 9836 bytes

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