Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b479f26fb8055aa…

MALICIOUS

PDF

41.6 KB Created: 2020-09-03 20:23:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 925e60128c2168a23cf96fc11589d153 SHA-1: a6b7e355f07c182dc0af5698463dff436a4246d2 SHA-256: 1b479f26fb8055aaf6e6bacf2f0b3b8782dbcfa0c446d8a22a5c6494e4147051
120 Risk Score

Malware Insights

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

The PDF file contains a link to a redirector, ttraff.me, which is part of a link farm strategy. This redirector then points to a large number of PDFs hosted on Shopify, likely to obscure the malicious intent and evade detection. The document body itself contains garbled text but includes the initial lure phrase and the malicious URL. No scripts were extracted from this sample.

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.me/wix?keyword=guided+diaphragmatic+breathing+exercise
    • https://cdn.shopify.com/s/files/1/0429/7503/5541/files/sadewelumupax.pdf
    • https://cdn.shopify.com/s/files/1/0430/3113/4365/files/15738302608.pdf
    • https://cdn.shopify.com/s/files/1/0436/9979/8166/files/telugu_movies_websites_names.pdf
    • https://cdn.shopify.com/s/files/1/0432/8754/3964/files/because_he_lives_song.pdf
    • https://cdn.shopify.com/s/files/1/0431/5385/0528/files/deep_breathing_exercises_for_anxiety.pdf
    • https://cdn.shopify.com/s/files/1/0440/0090/3318/files/camptown_races_easy_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0462/1887/0938/files/96688904545.pdf
    • https://cdn.shopify.com/s/files/1/0434/7301/0850/files/twitter_application_for_blackberry.pdf
    • https://cdn.shopify.com/s/files/1/0433/4924/6102/files/naxizitew.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xirapekewovefosisukepeja.pdf
    • https://cdn.shopify.com/s/files/1/0433/1785/4373/files/83669364695.pdf
    • https://cdn.shopify.com/s/files/1/0430/8815/0690/files/17154360629.pdf
    • https://cdn.shopify.com/s/files/1/0462/2299/9706/files/69188326741.pdf
    • https://cdn.shopify.com/s/files/1/0437/2273/5765/files/61205184573.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_off000060c4.bin
54b1cde6b5cbc9086915a2a43db36cf3a7a9301b66aa85fb6ac2d5940d46c6af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60C4 5692 bytes
font_01_sfnt_off000073f7.bin
2a765e7b4873675290482b3a796dd243ba1359eb12cddd624bbe4e53a8bc7b1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73F7 10516 bytes

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