Malicious PDF — malware analysis report

Static analysis result for SHA-256 16cebdd1f2058f88…

MALICIOUS

PDF

42.4 KB Created: 2020-08-01 23:30:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2b6f9215408d916f895c6a2d4291a54b SHA-1: e062469bcdee5cd535a2a6534cf9d5c3b5ca2021 SHA-256: 16cebdd1f2058f8863fdbc8b319be87cd0febcb0a8fd29a71c2a1d79bbf8b516
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.com) known for malicious activity. The document body, though heavily obfuscated, contains URLs that appear to be part of a link farm designed to attract users with lures like 'guitar_hero_on_pc.pdf'. The ML classifier strongly indicates maliciousness, and the overall structure suggests a phishing or scam attempt.

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=magellan+mistro+4250 In PDF document text
    • http://files.wenatcheevalleyrappellers.com/uploads/1/3/1/0/131070826/lopabivozona-nogedevuliteb-budofepegoxos-jotepiwor.pdfIn PDF document text
    • http://files.1travelshop.com/uploads/1/3/0/8/130813639/zibajotumipazav_tunafe_tukiseti_zetakomu.pdfIn PDF document text
    • http://files.shsoh.com/uploads/1/3/2/7/132712093/vurawisopo.pdfIn PDF document text
    • http://files.bobgraysonart.com/uploads/1/3/1/4/131407547/worixakuwinoxuzug.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/1/0431/1567/5815/files/guitar_hero_on_pc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9302/4158/files/47955315984.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7001/4111/files/32021812546.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5340/8675/files/zebutupirinobopidovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/42601152570.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5419/4085/files/jopakefaguw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3874/2430/files/77266595016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2308/9307/files/fimew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6278/8245/files/92304298169.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4438/0578/files/zamonezejalunen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7346/9597/files/verajiloponajivuvapudowa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0185/6668/files/27487084984.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5870/8118/files/xekas.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_off0000675a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x675A 5496 bytes
SHA-256: 6084d329838f6133c06b275f6adf4b1e3471a2ed22e5c59967487898ff34228e
font_01_sfnt_off00007a0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A0A 10144 bytes
SHA-256: 6726e81219499404eb1a865907c4be79a4f5542517b359c43345b329fc884e57

Open this report in the interactive analyzer, or submit your own file for analysis.