Malicious PDF — malware analysis report

Static analysis result for SHA-256 079964165573ee1d…

MALICIOUS

PDF

46.3 KB Created: 2020-08-12 07:37:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 32bb8a08d86863403c25b84674478884 SHA-1: 38fd822d12df8ab83824728589d9ccfc98918185 SHA-256: 079964165573ee1df5fcb6f8176a6008cef52f4cee9714627c83b9f8cada9afa
154 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to external PDF files, indicating a link farm. One of the primary links directs to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'retirement planning checklist pdf' and a URL that appears to be the same malicious redirector.

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.ru/pify?keyword=retirement+planning+checklist+pdf
    • http://files.allanlacoursiere.com/uploads/1/3/0/8/130813458/223c5956dce4ec0.pdf
    • http://rokulebo.michelacarmazzi.com/uploads/1/3/2/6/132683014/tosozopobulovajidut.pdf
    • http://files.livingwetoday.com/uploads/1/3/0/7/130776046/xobezezurake.pdf
    • http://files.nhplanetarium.com/uploads/1/3/0/9/130969399/1142077.pdf
    • http://xotosapit.greenscrub.ca/uploads/1/3/0/8/130814575/nupalilolikituj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/7777/1162/files/alat_tes_ist.pdf
    • https://cdn.shopify.com/s/files/1/0428/0900/0103/files/vumeza.pdf
    • https://cdn.shopify.com/s/files/1/0431/1423/4016/files/kodomilurarezarivafamovaj.pdf
    • https://cdn.shopify.com/s/files/1/0431/4074/3329/files/english_phonetic_spelling_alphabet.pdf
    • https://cdn.shopify.com/s/files/1/0435/8068/6497/files/55488043276.pdf
    • https://cdn.shopify.com/s/files/1/0436/1791/0941/files/junikugutovogak.pdf
    • https://cdn.shopify.com/s/files/1/0437/6395/7909/files/58321619466.pdf
    • https://cdn.shopify.com/s/files/1/0434/4463/3750/files/novenamisewo.pdf
    • https://cdn.shopify.com/s/files/1/0430/6354/1913/files/beranipewolijosovog.pdf
    • https://cdn.shopify.com/s/files/1/0432/1335/7211/files/air_pollution_control_engineering_noel_de_nevers_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/5802/1027/files/14715964795.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_off000075e3.bin
583d30d9cd5e8232ff3ac0d75f6e225a7bf21e1305c49ffc4e1684e11c58fb82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75E3 5640 bytes
font_01_sfnt_off000088dd.bin
7a2a075c61d03a2d1949b99f0e660df05ad67df50dda508a72f6b570984c70ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88DD 10272 bytes

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