Malicious PDF — malware analysis report

Static analysis result for SHA-256 11d240600e235127…

MALICIOUS

PDF

44.3 KB Created: 2020-08-26 21:26:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2e1344204fe20ae2b99a76783caf564c SHA-1: 906db29093afe8a357be69a897312771f4cb3459 SHA-256: 11d240600e235127b517053a9513d9b5d27adc27e35b67798fdd969e34b6def2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body and heuristics indicate a lure for an advance-fee scam, likely aiming to trick the user into visiting malicious URLs. The presence of numerous links, including a redirector, suggests an attempt to lead the user to fraudulent content or malware.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.club/pify?keyword=terratek+miter+saw
    • http://files.anisaradio.org/uploads/1/3/1/4/131437724/4392286.pdf
    • http://vosop.sfbaytherapist.com/uploads/1/3/1/0/131071066/xenixiwakelokadoro.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/6271/4773/files/lokevitovitofuroge.pdf
    • https://cdn.shopify.com/s/files/1/0431/7003/7924/files/php_truncate_string.pdf
    • https://cdn.shopify.com/s/files/1/0437/7539/3944/files/busch_gardens_tampa_map.pdf
    • https://cdn.shopify.com/s/files/1/0429/8843/7655/files/35341071282.pdf
    • https://cdn.shopify.com/s/files/1/0431/9775/9643/files/nupevuvesujabega.pdf
    • https://cdn.shopify.com/s/files/1/0439/0764/5595/files/94139052096.pdf
    • https://cdn.shopify.com/s/files/1/0433/6300/8664/files/agility_drills_for_soccer.pdf
    • https://cdn.shopify.com/s/files/1/0461/4881/2963/files/dagazog.pdf
    • https://cdn.shopify.com/s/files/1/0433/8011/3562/files/airway_management_devices.pdf
    • https://cdn.shopify.com/s/files/1/0434/0531/2156/files/accountancy_notes_class_11_cbse.pdf
    • https://cdn.shopify.com/s/files/1/0432/8318/5819/files/tracheostomy_care_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0434/6603/1257/files/belajar_bahasa_inggris_conversation.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_off00007074.bin
d894c1aa475630033ed153e83b396b0a62597d7add087bfa0e97aebe84945c41		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7074 4904 bytes
font_01_sfnt_off00008122.bin
c10db9e139fc3052bb0603c3f13f1dd720e42a1e6f4a574a78a60ecb267770ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8122 10244 bytes

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