Malicious PDF — malware analysis report

Static analysis result for SHA-256 14c6b1a569a1d7b7…

MALICIOUS

PDF

36.1 KB Created: 2020-08-01 11:57:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 09b44574c8513fe50d057e7906051444 SHA-1: 7c44e4a0b78659598d5f720cb7624e375bed85a8 SHA-256: 14c6b1a569a1d7b7ab4ee33ad30ef758f20762feb1f2efdcae788ea7984ac96d
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, suggesting a phishing or malware distribution attempt. The presence of 'cmd.com' in the document text and the ML classifier's high confidence score further support this assessment. The primary IOC is the redirector URL, which likely leads to a malicious payload or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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=wow+display+id In PDF document text
    • http://files.shifaacounseling.com/uploads/1/3/2/6/132681164/9451692.pdfIn PDF document text
    • http://files.evergreentrackingdogclub.org/uploads/1/3/0/8/130814043/7304091.pdfIn PDF document text
    • http://files.spccmd.com/uploads/1/3/0/9/130969428/2637841.pdfIn PDF document text
    • http://files.christiestimber.com/uploads/1/3/1/4/131438059/2a5c43dce8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5298/9601/files/jafotorutoviluregegoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2761/1300/files/516399124.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vojinanekarab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1892/7775/files/bufujoletetuwuludur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4044/0471/files/fafewebabufusotutapi.pdfIn macro / runtime command snippet
    • https://cdn.shopify.com/s/files/1/0432/2538/3073/files/tofupofi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5247/4280/files/45409736146.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6768/6558/files/445156572.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tedogunugovosilogupex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7652/5984/files/68421650601.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4571/6129/files/xepisugofurexikidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4101/4438/files/fixetekufetoxofowig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/subnautica_lifepod_19.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004fc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FC7 5064 bytes
SHA-256: edd44b563b1651ec0dab08db3dd5673c1ca78453f6666dad6e36ead86f4c63fb
font_01_sfnt_off00006134.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6134 10192 bytes
SHA-256: 064603ab516d92b1c8a0d9b9e0f55cb0305348df464efc741cfe4ff4bb353926