Malicious PDF — malware analysis report

Static analysis result for SHA-256 013eb0d1ea2b47e3…

MALICIOUS

PDF

37.1 KB Created: 2020-08-15 02:14:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eed48e5209ec6bd987f99e5980b224de SHA-1: 02039d853031a31413bcd2eec9e6271f90a58ed3 SHA-256: 013eb0d1ea2b47e3251f2a916a9713647ed57eecabfa6a60cdba256ee2899870
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, including one pointing to a known malicious redirector at `ttraff.com`. The document body, though heavily obfuscated, contains text that appears to be a lure related to "Adolescent health services guidelines". The presence of a link farm and a malicious redirector suggests a phishing or scam attempt.

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.com/pify?keyword=adolescent+health+services+guidelines
    • http://files.ronleachsoapstone.com/uploads/1/3/0/7/130740048/nalabejolawi.pdf
    • http://files.ravenaterra.com/uploads/1/3/1/3/131380005/da0e404c2e2bb0a.pdf
    • http://xipezevot.emiliyaahmadova.com/uploads/1/3/1/3/131380729/jidiluzepe.pdf
    • http://xesif.soundstonelaw.com/uploads/1/3/1/4/131453574/tipakiv.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/0147/1388/files/xajorefumepuxiduru.pdf
    • https://cdn.shopify.com/s/files/1/0434/3712/9895/files/gekopukubizoton.pdf
    • https://cdn.shopify.com/s/files/1/0432/6794/8706/files/matrix_multiplication_java.pdf
    • https://cdn.shopify.com/s/files/1/0431/7400/2837/files/50588272463.pdf
    • https://cdn.shopify.com/s/files/1/0429/5426/0643/files/kofiwowefu.pdf
    • https://cdn.shopify.com/s/files/1/0428/7011/2423/files/ardhanareeswara_stotram_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/gijixometopadipa.pdf
    • https://cdn.shopify.com/s/files/1/0431/5702/9019/files/keguwibuza.pdf
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/active_and_passive_voice_present_tense_exercises_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0440/5785/4102/files/4905897360.pdf
    • https://cdn.shopify.com/s/files/1/0430/2028/8153/files/endocrine_society_guidelines_thyroid_and_pregnancy.pdf
    • https://cdn.shopify.com/s/files/1/0440/4042/1541/files/jquery_input_on_change.pdf
    • https://cdn.shopify.com/s/files/1/0448/2433/0402/files/equine_answers_farriers_favourite.pdf
    • https://cdn.shopify.com/s/files/1/0433/2398/1979/files/87185884507.pdf
    • https://cdn.shopify.com/s/files/1/0433/9000/9502/files/55884557467.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_off0000531f.bin
581609494d9270571dcc91609afcc1f9634812a1f8120c5ee60b15716f86cbbe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x531F 5248 bytes
font_01_sfnt_off000064f4.bin
a60dddacbe99359ff77a19aadedcc915af029a0d7d7b2df919c00447e7fdc2ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64F4 10048 bytes

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