Malicious PDF — malware analysis report

Static analysis result for SHA-256 e834e65b57e259dc…

MALICIOUS

PDF

39.9 KB Created: 2020-08-08 22:12:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8811ccaa5673e96f357528ae8d612959 SHA-1: 8447598dc24a25daed998ab93af1eb031f7f0680 SHA-256: e834e65b57e259dccaf19025e2698a8511b8d7e97b6cfe59be74b59eeb906fd2
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it's a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=merriam+webster+s+medical+desk+dictionary+pdf'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with 'https://cdn.shopify.com/s/files/1/0439/4146/2174/files/python_3_soket_kind_for_icmp.pdf' being one of the first identified. The document body, though heavily obfuscated, contains the same malicious URL and benign-looking PDF filenames, reinforcing the lure.

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=merriam+webster+s+medical+desk+dictionary+pdf In PDF document text
    • http://files.woodcaliber.com/uploads/1/3/2/3/132303071/wamavopam.pdfIn PDF document text
    • http://files.southjerseyfootandankle.com/uploads/1/3/1/4/131438058/pupoxif_wapudufojefup.pdfIn PDF document text
    • http://files.ahafonlinechapter.com/uploads/1/3/1/6/131606733/4553913.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/1/0439/4146/2174/files/python_3_soket_kind_for_icmp.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0096/2977/files/88117357034.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/7997453156.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4486/2114/files/63466821628.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0041/3856/files/jitivolitidizowemisorubo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0490/3073/files/42151794716.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kewosa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3332/9817/files/96074457950.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3279/6574/files/mapusafud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1713/2456/files/36868253818.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2521/1298/files/libro_abuelas_de_plaza_de_mayo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4038/1855/files/23068732979.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4455/0294/files/2508776401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0682/7428/files/club_penguin_rewritten_hacks.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_off000051e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51E3 5704 bytes
SHA-256: f5c35c5ce5074a94218d758d73fb8c336bb418c6e07fcdd5ce969feec2b82f2d
font_01_sfnt_off0000655e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x655E 14380 bytes
SHA-256: aa55528f5a8c6d197e288e4934f52c450d5d3ea8528247f66ae1bc70929b7b2e

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