Malicious PDF — malware analysis report

Static analysis result for SHA-256 fff8bdbfa733969b…

MALICIOUS

PDF

41.8 KB Created: 2020-08-08 01:16:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fab5d837b2663fc1ddafa99da2cc8003 SHA-1: 6785e4b939866f365ebd915905b9a361caa0cb26 SHA-256: fff8bdbfa733969bc38bd341b19f005469d10078548b603feb63037aaebc9975
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on ttraff.com. This heuristic firing, combined with the ML classifier, strongly suggests a malicious redirector pattern. The document body, though heavily obfuscated, contains the URL that initiates the redirection, indicating a lure to download further malicious content.

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=beatles+anthology+book+pdf In PDF document text
    • http://files.kmillermusic.com/uploads/1/3/1/4/131437484/7dfa2943b79b.pdfIn PDF document text
    • http://files.naramatamuseum.ca/uploads/1/3/2/6/132681579/4bdb98b546.pdfIn PDF document text
    • http://noxupufat.salvadorpaniagua.com/uploads/1/3/2/3/132303382/letire-luxeki.pdfIn PDF document text
    • http://files.himes-consulting.com/uploads/1/3/1/1/131164129/2070749.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/1/0438/1379/8050/files/30844154497.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6280/4136/files/morokanamuwelodijasu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5933/9679/files/boguzivuvel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1371/7662/files/75369762393.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0406/0071/files/www_wimp_com.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5117/9416/files/woworobafapumidedesojatip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8886/1602/files/ap_calculus_limits_practice.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7833/6165/files/ca_final_new_syllabus_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2587/2549/files/kubivelopugo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/17412450542.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8808/5145/files/10821362036.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3762/0386/files/ronalagagewikotu.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 3

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_off000065e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65E6 5560 bytes
SHA-256: bc196c06e2c2278913f80dc7237c13b6a1928010293a8306fe4678a646bcfd6c
font_01_sfnt_off000078de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78DE 9768 bytes
SHA-256: 60ecd33d31e32c9c73d0c4cf8e923ce1f4e881b9bebb7a36ba5d85ca44e6e06d

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