Malicious PDF — malware analysis report

Static analysis result for SHA-256 1104a7fad8956c39…

MALICIOUS

PDF

44.6 KB Created: 2020-08-09 04:06:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cef1f36a5d38d365cc307c78b932dce7 SHA-1: ffb8d9b626e7b784e63c2c5ce21b127b57d38234 SHA-256: 1104a7fad8956c392e9f571706f83871d0fcd52e9f613fc80e005597ca14b160
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains multiple embedded links that point to redirector infrastructure, specifically `https://ttraff.com/pify?keyword=die+blechtrommel+pdf+download`. The presence of numerous links to external PDFs, many hosted on Shopify, suggests a link farm or SEO manipulation tactic to lure users. The ML classifier also strongly indicated maliciousness.

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=die+blechtrommel+pdf+download In PDF document text
    • http://files.dogwaydogrescue.org/uploads/1/3/1/4/131452861/1960213.pdfIn PDF document text
    • http://files.burninroseranch.com/uploads/1/3/1/3/131379590/eccfae3.pdfIn PDF document text
    • http://files.toymigos.com/uploads/1/3/1/8/131856381/61b8c1a.pdfIn PDF document text
    • http://files.trseniors.org/uploads/1/3/0/7/130775387/jewovolepesodi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9649/0655/files/skf_needle_roller_bearing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8126/0440/files/tewomugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7211/9199/files/46912740803.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5394/0887/files/deridusufotafegopil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9703/0817/files/30091959568.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4607/4525/files/41064881247.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0016/8597/files/xedewuginetokafavanem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6339/1894/files/bms_season_1_episode_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5472/6310/files/peniwalivejesebewij.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F91 5236 bytes
SHA-256: 54837bc31053b4a28e078cc91c6b04f87268d4e0c5f59d6e2c732f34e71e2fc5
font_01_sfnt_off0000713a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x713A 11176 bytes
SHA-256: 68abc26edadbd9fbb7055d1e9083a80316f2598c703df69ff003d8b42afee2ed
font_02_sfnt_off000095c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95C1 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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