Malicious PDF — malware analysis report

Static analysis result for SHA-256 c045bf75861367ac…

MALICIOUS

PDF

41.1 KB Created: 2020-08-24 18:21:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aaf59dc71ba087e619c5532e96fb5511 SHA-1: 40052496f70e3228be6923d6c4def661b31cd1b0 SHA-256: c045bf75861367ac7409fd846f2974142cd78b905502129dfec89b61d260c3c4
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link and a link farm, indicating a social engineering attempt. The embedded URL points to a redirector that appears to be part of a phishing or malware distribution campaign. The document body, though heavily obfuscated, contains text related to 'graduation thank you card templates free' and the malicious URL, reinforcing the lure.

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.cc/pify?keyword=graduation+thank+you+card+templates+free
    • http://womebikil.laughalotpaintandsip.com/uploads/1/3/1/1/131164250/e71f1aef4f1e971.pdf
    • http://files.mybrightwords.com/uploads/1/3/1/4/131438541/fasefuxos-mobelodixitij.pdf
    • http://muloj.churchfromadistance.org/uploads/1/3/1/4/131437044/xesivijebadomozipim.pdf
    • https://cdn.shopify.com/s/files/1/0430/7199/6053/files/40522498224.pdf
    • https://cdn.shopify.com/s/files/1/0432/5038/5051/files/furulojosoj.pdf
    • https://cdn.shopify.com/s/files/1/0429/1880/5657/files/zezopixonow.pdf
    • https://cdn.shopify.com/s/files/1/0432/5657/8212/files/kowesokufevonu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7511/6961/files/47318277067.pdf
    • https://cdn.shopify.com/s/files/1/0433/6350/0197/files/ms_visio_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0439/6069/6990/files/mini_chopper_motorcycle.pdf
    • https://cdn.shopify.com/s/files/1/0438/3129/6160/files/asvab_paragraph_comprehension.pdf
    • https://cdn.shopify.com/s/files/1/0447/3192/4629/files/donapubebaji.pdf
    • https://cdn.shopify.com/s/files/1/0440/8446/1720/files/nekibegig.pdf
    • https://cdn.shopify.com/s/files/1/0437/5629/0206/files/boxugalegekepokuvabuv.pdf
    • https://cdn.shopify.com/s/files/1/0434/5099/0753/files/cask_of_amontillado_analysis.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_off000062b9.bin
b247afc7c63424d27d1ef9cafdd64a30697c0670fd0d24d6b9a3520e31950b13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62B9 5592 bytes
font_01_sfnt_off0000759b.bin
fcaf1a43acaff2b4a4a610c67d335eaefd231b23f2c9a251d4b91f3b647cf6e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x759B 9980 bytes

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