Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d8ba2544f8cafe0…

MALICIOUS

PDF

63.0 KB Created: 2020-08-06 08:10:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: afb9c7606e8075487b82be82b3b0a8f6 SHA-1: cecf50108c0240597b3e115158ad66cfb4b4936c SHA-256: 1d8ba2544f8cafe00ca6dc9962c860270221b6d79f7e1dc45b2171c375893020
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=lexical+analysis+linguistics+pdf'. Additionally, it exhibits a PDF link farm heuristic, with numerous external links, many hosted on cdn.shopify.com. The ML classifier also strongly indicated maliciousness. The document body appears to be obfuscated or corrupted, but the presence of the malicious URL and the link farm structure strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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=lexical+analysis+linguistics+pdf In PDF document text
    • http://files.ericamaesincee.com/uploads/1/3/1/0/131070011/8634862.pdfIn PDF document text
    • http://files.ironbreedlemc.org/uploads/1/3/1/3/131382092/1892704.pdfIn PDF document text
    • http://files.dreampathwayskids.org/uploads/1/3/0/7/130740563/1422338.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/1/0428/2672/7580/files/65301643138.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0352/6820/files/xoxuduwamutupu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7007/0690/files/degodobadigev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0916/0862/files/42077002883.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9689/0785/files/holes_anatomy_and_physiology_11th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1054/7099/files/depuwafeki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7035/6637/files/sawed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0151/2090/files/88492308473.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3197/8403/files/4544737459.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8038/4674/files/rabizuvawena.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0119/0299/files/64080014203.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3839/1970/files/67185417705.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000aca6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xACA6 5112 bytes
SHA-256: 8e37507102e93792551e96bf4599cdd575096020c8252a01bc0956083fbea8cf
font_01_sfnt_off0000be2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE2A 10120 bytes
SHA-256: 32e244b622cb0406a9e3f58cb737a743e3350df631b8d3171c6ce84dcfe9bd9a
font_02_sfnt_off0000e0cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0CC 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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