Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f7ae6869459766d…

MALICIOUS

PDF

39.9 KB Created: 2020-08-20 16:53:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 05e9b2ca2e219e95589e82d959b85ea5 SHA-1: b4518bbd850b45c3eb07fb017d4a0968b957195d SHA-256: 5f7ae6869459766d014e6d4b2ddc42c7751fb4cfe5380dc5b21223ec1108ec61
154 Risk Score

Malware Insights

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

The PDF contains embedded URLs, with one identified as a malicious redirector. The document body, though heavily corrupted, contains text suggesting it is a lure for 'health and safety dashboard excel templates free'. The presence of numerous external PDF links, including a suspicious one pointing to a redirector, indicates a likely attempt to distribute further malicious content or phish users. No scripts were extracted, but the overall structure and heuristics point to a malicious document designed for initial access.

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=health+and+safety+dashboard+excel+templates+free
    • http://wovebe.dayleeosi.com/uploads/1/3/1/3/131398455/fopudafutukozawowig.pdf
    • http://files.qiman.org/uploads/1/3/0/7/130739353/63752.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/1635/4978/files/xbox_one_user_manual.pdf
    • https://cdn.shopify.com/s/files/1/0427/8085/2383/files/lexitadizefijalog.pdf
    • https://cdn.shopify.com/s/files/1/0433/6159/9656/files/13665369602.pdf
    • https://cdn.shopify.com/s/files/1/0437/5802/6903/files/19837654922.pdf
    • https://cdn.shopify.com/s/files/1/0444/4412/3303/files/public_private_partnership_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0428/7463/4403/files/27401354336.pdf
    • https://cdn.shopify.com/s/files/1/0454/3823/8878/files/65568824558.pdf
    • https://cdn.shopify.com/s/files/1/0428/5625/1559/files/48222627880.pdf
    • https://cdn.shopify.com/s/files/1/0430/9378/6791/files/manual_de_execuo_araken_de_assis.pdf
    • https://cdn.shopify.com/s/files/1/0434/8801/8594/files/wufojalanuwolulovasabepe.pdf
    • https://cdn.shopify.com/s/files/1/0428/4992/7327/files/xizavebi.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_off00005b4d.bin
cb47ff992e8313f7820486acc44595191fd57f6557e6c9a48a8caf32d3a51190
pdf-font-stream PDF embedded font (sfnt) at offset 0x5B4D 5664 bytes
font_01_sfnt_off00006e68.bin
46737e47993099375912d904ef9a61f9e2946c7e8984d77b7bdbb173dad6bedc
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E68 10688 bytes