Malicious PDF — malware analysis report

Static analysis result for SHA-256 349b9982c147f2f1…

MALICIOUS

PDF

49.6 KB Created: 2020-08-24 01:55:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: daa2b2de0d93eccee11bf25086bb2c5d SHA-1: 344040f5391349cccdb74de07a7b2bcfd3a181e8 SHA-256: 349b9982c147f2f1ce5ac246f850b580030ac6a68229d59410343fb4670c35b6
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many of which point to a redirector service (ttraff.cc) known for malicious activity. The document body, though heavily obfuscated, contains the same URL as the redirector, suggesting a deliberate attempt to lure users. The ML classifier also strongly indicated maliciousness. The primary attack pattern involves redirecting users to potentially harmful 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.cc/pify?keyword=free+after+effects+templates++for+mac In PDF document text
    • http://files.wyldblueent.com/uploads/1/3/2/7/132740536/xikerawibof.pdfIn PDF document text
    • http://files.mylifeinwyoming.com/uploads/1/3/0/7/130775922/fofita-kagusezulenozu-xerenesironixut-fisazosiza.pdfIn PDF document text
    • http://files.ulrichhoeche.com/uploads/1/3/0/7/130740298/2502780.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/1/0435/5594/6655/files/que_es_el_contexto_historico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0818/8839/files/ben_10_alien_swarm_nanomech_transformation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4647/7725/files/57254079043.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/94260126358.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2816/0418/files/kofitipuwaresa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/9064/0795/files/guinea_pig_care_sheet_australia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1136/5288/files/are_8_track_tapes_worth_anything.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/4458/0002/files/fish_handbook_for_biological_wastewater_treatment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2821/6983/files/puxupitugabunekawipi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3519/7602/files/905758252.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0571/4338/files/brahmacharya_in_english.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 1

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_off0000849c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x849C 5116 bytes
SHA-256: d4e2908a074afc3c589bfd192228becd57bed518fa9f74d78114ffb5ef6cde70
font_01_sfnt_off000095ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95EE 10460 bytes
SHA-256: bbf7a7d1f7b493df86a6d9f59a0e7526cec9744cce85302f922863780c4c432a

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