Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ce4210d6bd5f770…

MALICIOUS

PDF

64.7 KB Created: 2020-08-10 03:10:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ef3ebfca974d32c56cf9eb430f67b97f SHA-1: 770a08b81c5920d1d196917a975e801916c1f603 SHA-256: 6ce4210d6bd5f7702d77cb85b6b85052ad3c0d07c659aac5953efb1f01c901e0
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm or SEO manipulation tactic. Crucially, one embedded URL, 'https://ttraff.cc/pify?keyword=benedict+de+spinoza+ethics+pdf', is flagged as a malicious redirector. This indicates the document's primary purpose is to redirect users to malicious infrastructure, likely for phishing or malware delivery.

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.cc/pify?keyword=benedict+de+spinoza+ethics+pdf
    • http://files.anewleaf4you.com/uploads/1/3/1/3/131381376/gamanenunakujulu.pdf
    • http://files.bizsign.shop/uploads/1/3/1/4/131406688/revivofafolo_nabugeduduv_wimonuripep.pdf
    • http://lufej.natureswondercamps.com/uploads/1/3/2/7/132741555/73242d8f.pdf
    • http://rarom.thecleanandsimplelife.com/uploads/1/3/1/4/131454106/sabugomagula_fukopibixisisi_matopaxuno_rinarodosaxife.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/5920/7582/files/ff14_auto_translate.pdf
    • https://cdn.shopify.com/s/files/1/0436/3347/5737/files/juwotetowowinesojetit.pdf
    • https://cdn.shopify.com/s/files/1/0432/8495/5300/files/leave_of_absence_letter_sample.pdf
    • https://cdn.shopify.com/s/files/1/0435/7698/3713/files/74513922405.pdf
    • https://cdn.shopify.com/s/files/1/0428/7430/6719/files/44141858526.pdf
    • https://cdn.shopify.com/s/files/1/0431/2177/0657/files/wotidemirizozupoxadijag.pdf
    • https://cdn.shopify.com/s/files/1/0437/2021/2645/files/craftsman_snowblower_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/2843/8427/files/95369222265.pdf
    • https://cdn.shopify.com/s/files/1/0434/8113/7316/files/ethiopian_orthodox_bible_in_amharic_81.pdf
    • https://cdn.shopify.com/s/files/1/0429/4826/4089/files/39537603490.pdf
    • https://cdn.shopify.com/s/files/1/0435/7731/1391/files/cognition_and_emotion_from_order_to_disorder.pdf
    • https://cdn.shopify.com/s/files/1/0431/2216/3866/files/brevir_harian.pdf
    • https://cdn.shopify.com/s/files/1/0433/0822/0574/files/72863707801.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c15c.bin
db2486222cc75258324a52ba95169867fa442fc614cbcaeb28dbebff16676aca		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC15C 5216 bytes
font_01_sfnt_off0000d32b.bin
d0c015a61e564245f462ee2169a15291e9fcc89d5c8b56e05123fc1734bc8330		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD32B 10008 bytes

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