Malicious PDF — malware analysis report

Static analysis result for SHA-256 a945c0cfeebefebb…

MALICIOUS

PDF

44.2 KB Created: 2020-08-12 15:56:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 61a5073dce80ae03998c03d5dbd6671c SHA-1: 497caa8b11128f6eb21b3ef4a19910c77dba4a74 SHA-256: a945c0cfeebefebb446fe945280c702a5beb56b27aeea98b8e3a9402fa6bd406
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The document body includes a URL that redirects to a known malicious domain, suggesting a phishing or malware delivery attempt. The presence of a 'LOLBin Run Command' heuristic indicates potential execution of system tools, further supporting malicious intent. No scripts were extracted from this sample.

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.com/pify?keyword=amendments+test+1+27+pdf In PDF document text
    • http://files.istagesydney.com.au/uploads/1/3/1/4/131438059/sowogeke_genuxovetivuze_datefovolipu_dijef.pdfIn PDF document text
    • http://files.thearamaicscriptures.com/uploads/1/3/1/3/131383924/9845277.pdfIn PDF document text
    • http://files.s3arc.com/uploads/1/3/1/6/131637136/9a2c3dff1a69.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3050/2806/files/nelizuwosufexalejinutulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8011835234.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7745/9363/files/57785738976.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0979/4463/files/64411950509.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7560/0535/files/awk_linux_command.pdfIn macro / runtime command snippet
    • https://cdn.shopify.com/s/files/1/0434/9234/3970/files/lekabiruloboxubadutikamax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/16175378270.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8144/9118/files/daxotus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8256/1176/files/aphrodite_greek_mythology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4087/4408/files/virinafelowe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2788/9303/files/94154721835.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000634b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x634B 4732 bytes
SHA-256: 6d1e1be244e068a53ecededd984fa92a25b305419f8184a40768b7c3f19f9483
font_01_sfnt_off00007351.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7351 10048 bytes
SHA-256: 89aa1fabbb7cc2410996ac7acf56a8d97b2af88115499b726c8a4379677518c5
font_02_sfnt_off000095b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95B4 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34