Malicious PDF — malware analysis report

Static analysis result for SHA-256 e88c1a208f97b28e…

MALICIOUS

PDF

41.8 KB Created: 2020-08-11 19:31:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f9e9826515bf18212ff3469db9b75061 SHA-1: eb0cab0f442a907f1b5492d574fe2ea0f9010406 SHA-256: e88c1a208f97b28edb0e1b2bc9b82b590a2d519aa347b08736b19c8e55df1150
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources, indicating a link farm. One critical heuristic identified a link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL https://ttraff.cc/pify?keyword=descriptive+geometry+examples+pdf, suggesting a lure to a malicious site. The ML classifier also strongly indicated maliciousness.

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=descriptive+geometry+examples+pdf In PDF document text
    • http://lemofa.malikwork.com/uploads/1/3/2/6/132682076/winujaji.pdfIn PDF document text
    • http://files.worldtravelingfeet.com/uploads/1/3/1/3/131378990/9034742.pdfIn PDF document text
    • http://files.bollr.com.my/uploads/1/3/2/7/132740836/6cfeedfbaa.pdfIn PDF document text
    • http://fipibir.solerconsulting.com/uploads/1/3/1/6/131636648/6709843.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/1/0428/3649/2444/files/beladegajosegunovine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8237/5577/files/galobuwufux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7510/9013/files/85676862952.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4951/6199/files/6990861408.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7938/4736/files/kirobajajorikogadiroxez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0133/0339/files/autonics_temperature_controller_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1638/0831/files/dowevaxowe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2236/0481/files/adrenalina_y_noradrenalina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8127/7342/files/11544048985.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2703/8359/files/70256332116.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 5

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000649b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x649B 5704 bytes
SHA-256: 1f530ed7f6f7f938dfcdd87a50e77194e98a65acd10d0cebcc14f7b05ab3ceaf
font_01_sfnt_off00007807.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7807 10112 bytes
SHA-256: 3d131d624eab070c4b6eb0a496849acf2ee926d5789f35e1f2bdf5d041fa73bb

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