Malicious PDF — malware analysis report

Static analysis result for SHA-256 9672425d143580b6…

MALICIOUS

PDF

42.3 KB Created: 2020-08-07 07:51:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b226b4e4eba72f81adf7e3ce6c9f2f3a SHA-1: 4a7242590cab7b3db2f5d89202510a7e12e73426 SHA-256: 9672425d143580b6e8dbc40e52eea03aac3f5012c1fee978f81c5e1c2b8cd4c0
150 Risk Score

Malware Insights

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

The PDF file exhibits malicious characteristics, primarily through the inclusion of a large number of external links. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=caramelization+reaction+pdf'. The document body, though heavily obfuscated, contains references to this URL and other Shopify-hosted PDF files, suggesting a link farm or SEO manipulation tactic. The overall purpose appears to be directing users to potentially harmful content or infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=caramelization+reaction+pdf
    • http://ladoni.woodsinbloom.com/uploads/1/3/1/4/131453060/6787018.pdf
    • http://files.rangerschoolofdance.com/uploads/1/3/1/6/131606373/dolajopar-bipurabuborenim-wojapo-femezuwamefu.pdf
    • http://files.charlottepantherstrackclub.com/uploads/1/3/1/0/131070591/f9641c6f7.pdf
    • https://cdn.shopify.com/s/files/1/0431/6466/3967/files/durable_power_of_attorney_form_new_york.pdf
    • https://cdn.shopify.com/s/files/1/0428/2456/4902/files/modern_bungalow_house_plans.pdf
    • https://cdn.shopify.com/s/files/1/0433/1218/5502/files/bixupavowojejuxuvos.pdf
    • https://cdn.shopify.com/s/files/1/0437/6189/3534/files/accords_guitare_jazz_manouche.pdf
    • https://cdn.shopify.com/s/files/1/0431/4729/6922/files/bugokebavebexa.pdf
    • https://cdn.shopify.com/s/files/1/0429/7284/0090/files/ain_t_no_sunshine_lyrics_and_chords.pdf
    • https://cdn.shopify.com/s/files/1/0433/9931/5619/files/11278971519.pdf
    • https://cdn.shopify.com/s/files/1/0437/8745/2576/files/biodiversity_conservation_introduction.pdf
    • https://cdn.shopify.com/s/files/1/0432/2761/1295/files/wajepewovuxuza.pdf
    • https://cdn.shopify.com/s/files/1/0432/2145/0914/files/65512312858.pdf
    • https://cdn.shopify.com/s/files/1/0428/4622/4551/files/kifukelamajudeponu.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_off000067d5.bin
5862ff99eedf6df6af1607f2fa997e1f88f368d5a703325127bd1592dcbe845d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67D5 5080 bytes
font_01_sfnt_off0000790e.bin
c3805199e70f5b922cbf758469f5e32a0aaa117b8f21d26f00d3e748eec4f40c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x790E 10392 bytes

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