Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9bf6ae32f7264bd…

MALICIOUS

PDF

46.6 KB Created: 2020-09-07 14:16:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2e8b28417ba464fbfcbb9ea731e6de2c SHA-1: c633d5830f02af8f8b40c263a53cd491aec045c4 SHA-256: d9bf6ae32f7264bd48f16bf9648c78da8aea29c1eee9ea02f77a435a2e895830
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the same URL as the critical heuristic firing. This suggests a social engineering attempt to drive traffic to malicious infrastructure, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=orchestrating+winning+performance+imd
    • https://cdn.shopify.com/s/files/1/0433/6756/3420/files/wufofalokin.pdf
    • https://cdn.shopify.com/s/files/1/0435/5309/5844/files/56618953503.pdf
    • https://cdn.shopify.com/s/files/1/0430/1937/0659/files/xatesuzafiwaradijebe.pdf
    • https://cdn.shopify.com/s/files/1/0432/9403/2025/files/77996456775.pdf
    • https://cdn.shopify.com/s/files/1/0435/3395/9327/files/cta_blue_line.pdf
    • https://static.usrfiles.com/ugd/33a2e4_e8fab2e28d7949439fcbd3ba05770ecd.pdf
    • https://static.usrfiles.com/ugd/d31907_138483f7f34d43f88dac0e12402a9dd7.pdf
    • https://static.usrfiles.com/ugd/90423f_544eec7df4544866a6c832399ac24e5c.pdf
    • https://static.usrfiles.com/ugd/0df15e_c04082920e5d415ca11288ee2cccaa69.pdf
    • https://static.usrfiles.com/ugd/8ade13_1f5031f2a36a4cb8a658d2b983a3f563.pdf
    • https://cdn.shopify.com/s/files/1/0433/6690/8065/files/super_mario_for_pc.pdf
    • https://cdn.shopify.com/s/files/1/0437/2214/5943/files/vixizezisuroworoni.pdf
    • https://cdn.shopify.com/s/files/1/0433/0727/0312/files/accidente_ofidico_bothropico.pdf
    • https://cdn.shopify.com/s/files/1/0446/6756/8291/files/gta_san_andreas_hot_coffee_mods.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mazimuzoxoku.pdf
    • https://cdn.shopify.com/s/files/1/0433/0081/5006/files/56173487998.pdf
    • https://cdn.shopify.com/s/files/1/0431/8851/9074/files/padela.pdf
    • https://cdn.shopify.com/s/files/1/0439/8402/7806/files/38085791870.pdf
    • https://cdn.shopify.com/s/files/1/0429/5812/7270/files/anesthesia_secrets_free.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/
    • https://cdn.shopify.com/s/files/1/0429/5812/7270/file

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069b4.bin
270ad189e95ff67966fa621b6499ce6c43445bc3b9dfdfd9f279583d477fe6d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69B4 5444 bytes
font_01_sfnt_off00007c1e.bin
3e588068ebf88c56188c389bec7c3b6fd64c9151349482d4b7d138a0c6e54b37		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C1E 10252 bytes
font_02_sfnt_off00009f44.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F44 4324 bytes

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