Malicious PDF — malware analysis report

Static analysis result for SHA-256 e07838bfc11d2e82…

MALICIOUS

PDF

42.8 KB Created: 2020-08-12 20:43:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fa3f8d26491b01702f0c16720bf6cfda SHA-1: 895fa7645e601fe1517378ffd410f1aacfce37c5 SHA-256: e07838bfc11d2e82c45d849a1e1cfa59520116586456dddfabd63e345ca98a7e
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, including one pointing to a known malicious redirector (ttraff.com). The document body, though partially corrupted, suggests a lure related to 'educational assessment and evaluation'. The presence of a mass external PDF link farm, with many links hosted on Shopify, indicates a sophisticated attempt to distribute malicious content or phish users. The ML classifier strongly supports the malicious verdict.

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.com/pify?keyword=educational+assessment+and+evaluation+pdf In PDF document text
    • http://files.mandalatreasures.net/uploads/1/3/1/3/131384636/3531508.pdfIn PDF document text
    • http://doxam.breannefahs.com/uploads/1/3/0/7/130775734/c4dc4.pdfIn PDF document text
    • http://files.liftyourlifewithlaura.com/uploads/1/3/0/9/130969310/wopitutopur.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/1/0431/8042/5370/files/rozoruzewejefulif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/tuduxoweve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/zudulopovuvute.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9429/5203/files/zutigumutepotof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/5169/1681/files/characteristics_of_life_multiple_choice_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1977/8723/files/55582596254.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7300/9819/files/51514911933.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9097/5647/files/wuribaxuzivobovatagufo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7410/1160/files/78943895671.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9038/5821/files/s_club_8.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7235/6514/files/36389796620.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5109/0071/files/espirometria_valores_normales.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 4

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_off00006a6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A6D 5220 bytes
SHA-256: c9b203896d112e6951fb809063730b2c44c677c98166752c0e7cdee16bceac23
font_01_sfnt_off00007c2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C2D 10012 bytes
SHA-256: f9d5d2eb5a5481208cfd9f62f03684ea3ed912fa6ccaf03276f21b667d2c3fab

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