Malicious PDF — malware analysis report

Static analysis result for SHA-256 840de4264ac0c3f6…

MALICIOUS

PDF

106.8 KB Created: 2020-08-06 11:50:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 90246c061e0829708c12aa4b9e6639a9 SHA-1: 54111938789a64afbcd4c66ed015b70d242a4e9c SHA-256: 840de4264ac0c3f697fc35b574aa0a2bcfd487a24bf1c0f49dde181581d393a0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple heuristics indicating malicious redirection and a link farm, pointing to a phishing or scam attempt. The embedded URL `https://ttraff.com/pify?keyword=complex+problem+solving+techniques+pdf` is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting it's the primary lure. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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=complex+problem+solving+techniques+pdf In PDF document text
    • http://sitatijiv.rhsglobalstudies.com/uploads/1/3/0/7/130776407/dukap-majibi.pdfIn PDF document text
    • http://files.wisdomandwellness.us/uploads/1/3/2/6/132682119/5601922.pdfIn PDF document text
    • http://files.tackandhorseoman.com/uploads/1/3/1/4/131407737/00e48a.pdfIn PDF document text
    • http://files.thepottershousesandiego.com/uploads/1/3/1/1/131164039/6542141.pdfIn PDF document text
    • http://files.evolutionmeetings.org/uploads/1/3/0/8/130874598/mafax.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/1/0433/7870/4536/files/98122891600.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7766/2875/files/43625056475.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3705/6414/files/49177169505.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3713/0914/files/10597546616.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9992/1315/files/gafaguwuduxamujuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4211/9592/files/merriam_webster_english_dictionary_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4224/9631/files/gabiruxogunalopolumowut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6550/6966/files/6110506975.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4321/5767/files/86797601530.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4865/7318/files/9429919873.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8713/2827/files/30-_30_150.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2383/4024/files/vuwujijukarejebesilejojub.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_off00015bab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15BAB 5656 bytes
SHA-256: 9ef4c89584cf3b1dc801d9848e5377db305d2c5b2a14bf03fe75f0e8145ae42e
font_01_sfnt_off00016eb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16EB3 14876 bytes
SHA-256: 916fbea95cbf74d0ada994c10b87574e812297f11b30ccca5d32532cdf5f67b3

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