Malicious PDF — malware analysis report

Static analysis result for SHA-256 5add555a8352a88a…

MALICIOUS

PDF

42.9 KB Created: 2020-08-17 03:41:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fba0d115358a62a4f458ad67d89cd9af SHA-1: 5b26d11e0c8cf944361a304c5d137d8f8870c692 SHA-256: 5add555a8352a88aac9d19caa330815a1a80878ddaec88fe9a329d945ce73c99
154 Risk Score

Malware Insights

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

The PDF document contains a malicious redirector link disguised as a "Damaged cargo report". This link, `https://ttraff.cc/pify?keyword=damaged+cargo+report+%25E0%25B8%2584%25E0%25B8%25B7%25E0%25B8%25AD`, is designed to lure users into clicking it, likely leading to further malicious content or downloads. The presence of a link farm further indicates a malicious intent to distribute content or traffic.

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=damaged+cargo+report+%25E0%25B8%2584%25E0%25B8%25B7%25E0%25B8%25AD
    • http://files.townofharmony.org/uploads/1/3/2/6/132695392/limifovoxaramu-motetinawado.pdf
    • http://jazimef.muzikale.nl/uploads/1/3/0/8/130813747/fogusilujulare_zuvazeji.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.opentle.org
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/fawegewipivarobofepo.pdf
    • https://cdn.shopify.com/s/files/1/0447/8818/7293/files/dnd_5e_chain_mail.pdf
    • https://cdn.shopify.com/s/files/1/0433/0474/7168/files/14341715154.pdf
    • https://cdn.shopify.com/s/files/1/0429/2762/0249/files/cooling_tower_capacity_calculation_formula.pdf
    • https://cdn.shopify.com/s/files/1/0433/5419/4085/files/70286640250.pdf
    • https://cdn.shopify.com/s/files/1/0437/0094/5048/files/47227285830.pdf
    • https://cdn.shopify.com/s/files/1/0431/3923/5997/files/92837169539.pdf
    • https://cdn.shopify.com/s/files/1/0434/6891/4838/files/febupebafufosijeju.pdf
    • https://cdn.shopify.com/s/files/1/0431/1692/0996/files/pomevadulawif.pdf
    • https://cdn.shopify.com/s/files/1/0437/3187/8049/files/digital_electronics_multiple_choice_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/2388/3688/files/96301852476.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
    • http://www.gnu.org/licenses/gpl.html

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004c2e.bin
2394910a84c7be76f7500da5eb52909c5778005b266c5cb9df3a05613e558112		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C2E 5180 bytes
font_01_sfnt_off00005db4.bin
96a6b1aca62ce964ce1a7f0f1d699b36a218f8ea7d340becdfd918ff57d46c02		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DB4 6180 bytes
font_02_sfnt_off00006db0.bin
58b4873d33ac9fffaf45ed1a2312b8eb5fadf3b067e77f8cfe9e87095f6a7717		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB0 6068 bytes
font_03_sfnt_off00007d60.bin
2794812483be9153af7080d9de354d91a7485b19e98da1839bd4f3ac4a5963fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D60 9152 bytes

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