Malicious PDF — malware analysis report

Static analysis result for SHA-256 33d8e50a42275e8e…

MALICIOUS

PDF

33.9 KB Created: 2020-08-29 18:56:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9482ae4a35b2af119464f5c04acf5771 SHA-1: 80dfb53ca02990fe392ac98b9c8ee7092a53e1b0 SHA-256: 33d8e50a42275e8e5abff1fde8b24796bbc2b1d4b65196dc63fb1465bc5692db
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one pointing to a known malicious redirector. The document body and embedded links suggest a lure to external content, likely to download further malware or phish for credentials. The presence of numerous Shopify URLs, some with book or manual slugs, indicates an attempt to appear legitimate while distributing malicious links.

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/wix?keyword=pracovn%25C3%25AD+listy+zdrav%25C3%25BDch+t%25C4%259Bl
    • https://cdn.shopify.com/s/files/1/0464/9441/7064/files/94135109721.pdf
    • https://cdn.shopify.com/s/files/1/0429/5943/7975/files/gikewamupejerikumeju.pdf
    • https://cdn.shopify.com/s/files/1/0427/7141/5196/files/modern_physics_3rd_edition_solution_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fuwakuda.pdf
    • https://cdn.shopify.com/s/files/1/0433/7690/2309/files/2010_dodge_challenger_v6_performance_upgrades.pdf
    • https://cdn.shopify.com/s/files/1/0430/4424/1562/files/6th_grade_math_worksheets_with_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0430/7084/9181/files/11905992713.pdf
    • https://cdn.shopify.com/s/files/1/0431/9569/5265/files/cambridge_primary_science_activity_book_3.pdf
    • https://cdn.shopify.com/s/files/1/0428/8161/3987/files/el_viaje_del_heroe_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0431/4624/8358/files/pixijotenerigoxurumem.pdf
    • https://cdn.shopify.com/s/files/1/0434/5459/5224/files/azimuthal_quantum_number.pdf
    • https://cdn.shopify.com/s/files/1/0430/0092/2261/files/74785700115.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_off00004373.bin
333e2caed5dc943c2063c2477e600896bbe2187bdaa06994356bc0a6d7963467		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4373 5568 bytes
font_01_sfnt_off000055e0.bin
1373e1f83670604ead4f99d391a76f62a7f20d247447db3a9d9a6c24d951dbbf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55E0 11672 bytes

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