Malicious PDF — malware analysis report

Static analysis result for SHA-256 88848b005d6e8b16…

MALICIOUS

PDF

47.8 KB Created: 2020-08-25 09:42:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b7bdcf60b3584e9f58dcf25c394971b SHA-1: 9df5f9ce6b58c060bfb88ed73f6d00679f6009f8 SHA-256: 88848b005d6e8b166a60808428f35804d182cc81f49b7acdb170cb4fcc1ae55b
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=biodata+form++in+excel+format'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many hosted on Shopify. The document body text also contains the same malicious URL, reinforcing the lure. The primary intent appears to be redirecting users to malicious infrastructure via a deceptive link.

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=biodata+form++in+excel+format
    • http://files.argoscanada.com/uploads/1/3/2/6/132681394/mosez-wulafagisifadex-webusaz-kewodoju.pdf
    • http://gebupos.shupik.com/uploads/1/3/0/8/130814328/1738796.pdf
    • http://files.heartandmindofaleader.com/uploads/1/3/0/7/130739719/nuninizev-jojoburixeneg.pdf
    • http://files.koasportsleague.com/uploads/1/3/1/3/131397938/pezuna.pdf
    • https://cdn.shopify.com/s/files/1/0433/8424/2334/files/sunepexopokuporepovusoke.pdf
    • https://cdn.shopify.com/s/files/1/0431/8609/4248/files/fekokiwolo.pdf
    • https://cdn.shopify.com/s/files/1/0437/0163/3177/files/nokap.pdf
    • https://cdn.shopify.com/s/files/1/0432/8580/7268/files/kebufevigixotuze.pdf
    • https://cdn.shopify.com/s/files/1/0432/3636/0351/files/9076790420.pdf
    • https://cdn.shopify.com/s/files/1/0436/8603/5621/files/vodobatorovuvupijifi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5892/9570/files/12493683084.pdf
    • https://cdn.shopify.com/s/files/1/0465/1492/9822/files/fibubixiroxafurakumenumo.pdf
    • https://cdn.shopify.com/s/files/1/0438/3506/4480/files/bases_of_market_segmentation_with_examples.pdf
    • https://cdn.shopify.com/s/files/1/0435/6128/7839/files/dulogevexugifujurolalitib.pdf
    • https://cdn.shopify.com/s/files/1/0464/7596/8662/files/cisco_nexus_5672up_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/facebook_blue_badge_verification_form.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_off00008066.bin
6d5e244caac3f19b345e20660424637448717b18d319eb5b1cfa06a0103dfa80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8066 5108 bytes
font_01_sfnt_off000091aa.bin
fed27877e542c38737bb845b27bb130596b9bb80f28e3ce80c31920a72fd8ab8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91AA 9664 bytes

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