Malicious PDF — malware analysis report

Static analysis result for SHA-256 a784c35842c02ab4…

MALICIOUS

PDF

40.3 KB Created: 2020-08-15 00:17:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cf1ec8f3e501f10bb9ce5753e5cea3aa SHA-1: 6e6408bd439c039a1f7c6ec973325dd9504ca107 SHA-256: a784c35842c02ab49d160a11979ba03436ec4d3556bf584022c9f4262a725187
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to Shopify domains, but a critical link redirects to a known malicious infrastructure at ttraff.com. This suggests a phishing or scam attempt disguised as a technical manual, leveraging SEO tactics to distribute the malicious link. The ML classifier strongly supports the malicious verdict.

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/wb?keyword=decimator%20g%20string%20manual In PDF document text
    • http://files.ivansparrow.com/uploads/1/3/0/8/130814106/403cb3b30.pdfIn PDF document text
    • http://tilidudi.deathnotenews.com/uploads/1/3/2/6/132695399/01b21.pdfIn PDF document text
    • http://files.judytarnofsky.com/uploads/1/3/0/8/130873979/sezolowebo-wakifimajulugo.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/1/0432/5870/8118/files/segarejokati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3055/2474/files/advantages_and_disadvantages_of_centralized_and_decentralized_curriculum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1764/9821/files/burokolagi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0991/6576/files/balcharit_series_raj_comics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6486/7481/files/kimefomubufowake.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8386/6007/files/the_brothers_grimm_cinderella.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8005/5974/files/79351230389.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5011/4965/files/a_b_z_forms_of_dna.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4610/8312/files/simple_monthly_budget_worksheet_for_young_adults.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1085/0979/files/18844725970.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/2826/2560/files/linked_list_queue.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 2

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_off00005e62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E62 5116 bytes
SHA-256: 8ccee92dfda221978e15f8acfd7d305b232ae481a1b3dc6d0c4b720816178a49
font_01_sfnt_off00006fb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FB4 10792 bytes
SHA-256: 270ba87bd63c13ed16b95832db3ffcc1dff28b401f2fe612a4008f52e02d3807

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