Malicious PDF — malware analysis report

Static analysis result for SHA-256 db4701ad793c1b57…

MALICIOUS

PDF

37.7 KB Created: 2020-08-18 21:13:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 97987cb5bcd9c5654e7492b406ccfe38 SHA-1: f67c24f24c95e8b6ab035f154382605fa2753da9 SHA-256: db4701ad793c1b5747cf82695fff3bb431bb4a9f733b916030fe1fb2b08f2c4c
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 external PDFs, a common tactic for SEO poisoning and link farming. One critical heuristic identified a link to a known malicious redirector, https://ttraff.com/pify?keyword=amigurumi+treasures+book+pdf, which is likely the primary malicious payload delivery mechanism. The document body, though heavily obfuscated, contains this URL and other PDF links, reinforcing the lure.

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=amigurumi+treasures+book+pdf In PDF document text
    • http://rigifaw.saferoptions.org/uploads/1/3/2/6/132682076/jedukemogap_jizebimagozi_jitebabovuxif.pdfIn PDF document text
    • http://files.primamusiceducators.com/uploads/1/3/0/7/130738564/jekebisin.pdfIn PDF document text
    • http://files.michaelcozzaglass.com/uploads/1/3/0/8/130813037/xodepipo_notevotilokiki.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/1/0430/4296/3613/files/radatake.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8970/5625/files/brittany_renner_judge_this_cover_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4042/1541/files/windows_xp_oem_iso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4070/9527/files/verupuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3239/6447/files/82055024982.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6183/7981/files/balistica_forense_livro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0219/2284/files/apec_2020_agenda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2449/8333/files/vufafaro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9948/0473/files/68636606622.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000047c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47C4 5300 bytes
SHA-256: 80243149e8a608e7ff0cc0959b4e99f6dacf3c50b3652ab41396236c92d92211
font_01_sfnt_off000059c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59C3 9952 bytes
SHA-256: 8569c104dc4fb3e8e241d40c907d853a9b45e3af09504e7fad8cfc0c6373a5e9
font_02_sfnt_off00007be1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BE1 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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