Malicious PDF — malware analysis report

Static analysis result for SHA-256 e78e6a8b76b2f147…

MALICIOUS

PDF

34.1 KB Created: 2020-08-08 01:01:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7690852c3cb16d41c01cacef69d70de5 SHA-1: 58cee21d2aec33557606fd0186ee38486caa5555 SHA-256: e78e6a8b76b2f147ad10b39b6c89a1172caf87bc56764be7dfe1656f674adebe
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which point to a redirector infrastructure. The primary malicious URL identified is https://ttraff.ru/pify?keyword=learn+to+speak+english+in+urdu+pdf+book+free+download, which is known to host malicious content. The document body text, though garbled, suggests a lure related to downloading a PDF book, which is consistent with the link farm behavior.

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.ru/pify?keyword=learn+to+speak+english+in+urdu+pdf+book+free+download In PDF document text
    • http://files.rachelbeckles.com/uploads/1/3/0/9/130969478/debumetemab.pdfIn PDF document text
    • http://files.wdmoc.com/uploads/1/3/0/7/130775171/naxagetis-sojew-pubovogib-xazutolifa.pdfIn PDF document text
    • http://files.nelecreativegroup.com/uploads/1/3/1/0/131070918/pogagojojolinag.pdfIn PDF document text
    • http://gazaratab.locogringosstreettacos.com/uploads/1/3/0/8/130814297/vugimuw.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/1/0431/9857/8848/files/33407778537.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3975/0294/files/45914916907.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7258/5888/files/zemadewuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6085/3912/files/32991800363.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nulifagavukaxubodipiripu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7218/4732/files/kasomawotedupid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8787/8549/files/xemejagopesosipiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9324/5590/files/38390415728.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5537/3720/files/nuwofavoso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4556/0219/files/52298253813.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1345/6550/files/inductive_deductive_reasoning_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1792/7837/files/vugerepokevufivuvarudida.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8589/7627/files/pomurigesoworetape.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000046c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46C5 5540 bytes
SHA-256: 572c88f2af7a662e2e3f91550451264f99bdc446a4423a778a60a9545fcc3fc0
font_01_sfnt_off000059aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59AA 9756 bytes
SHA-256: c0c801d53ecc0164b406511868b24215d2842472dd8037d4d0df6352d6e664cb

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