Malicious PDF — malware analysis report

Static analysis result for SHA-256 05ff21c41f5eefea…

MALICIOUS

PDF

33.2 KB Created: 2020-08-08 17:47:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 69686ba3e2dcdaf594915d3b63a8da63 SHA-1: 58f2b6f11a3a7af66ffa0777411fd627206021b3 SHA-256: 05ff21c41f5eefea99e6f5ef0aadb4897d01df2159a19272f5c60ab4611b2e5c
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.com) identified as malicious. The document body, though heavily obfuscated, contains the URL https://ttraff.com/pify?keyword=annex+14+icao+pdf, suggesting a lure to download further malicious content or engage in phishing. The ML classifier strongly flagged this PDF as malicious, and the presence of a link farm further supports malicious intent.

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=annex+14+icao+pdf In PDF document text
    • http://files.kevinbirdteachingportfolio.com/uploads/1/3/1/8/131871745/8285937.pdfIn PDF document text
    • http://files.liloli.org/uploads/1/3/0/9/130969225/vadiwosebuv_jetaxobabivixok.pdfIn PDF document text
    • http://files.ktvfphotography.com/uploads/1/3/2/6/132682976/zarovudepijij-gimejowujijaza.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/1/0436/1519/1202/files/28454862560.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9975/8497/files/42159533186.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8186/7176/files/77547950177.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6960/9886/files/mind_your_language_season4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9808/7328/files/desuminafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2755/4723/files/pisipefoxatuta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/8883/3701/files/how_to_run_python_script_in_linux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0147/9321/files/susimukaxuzopifasinuxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9587/5989/files/mizevineb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0776/9750/files/xixokexulitekakifu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1829/6228/files/33357054826.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2053/2386/files/97449190647.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/namosibak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7264/3491/files/briggs_and_stratton_repair_manual_271172.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000046c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46C6 5040 bytes
SHA-256: fd75cf971a462aad26add91d68110c7ef92e24a9a3777fc1207d6c403f7b567d
font_01_sfnt_off0000581b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x581B 9356 bytes
SHA-256: 3d401f61d37309fa705d465b6933db93f9fc82b731966490cf691f5883f08ce7

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