Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7ca054bc43ed1d3…

MALICIOUS

PDF

34.8 KB Created: 2020-08-14 09:13:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b36abb87e74b2e87a23ff24897996ab3 SHA-1: ca322e4e1af8160b43fbb0363e4cc5471c8b83c4 SHA-256: f7ca054bc43ed1d35244cb4a61f81a2029b44808ec5ecfc5d0687bb4cdea5acd
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains the same URL, suggesting a lure to trick users into clicking on malicious links. 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/wb?keyword=sanitas%20sft%2077%20manuale%20italiano In PDF document text
    • http://gesukomis.considerthestandardbred.com/uploads/1/3/1/4/131482995/torubodep.pdfIn PDF document text
    • http://jalow.sdstarresources.org/uploads/1/3/0/7/130776804/lelugax_gisex.pdfIn PDF document text
    • http://files.hopegardencounseling.com/uploads/1/3/1/4/131482926/wikifomimuf.pdfIn PDF document text
    • http://files.coachsteele.tech/uploads/1/3/1/0/131070336/surefuwubuket.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/1/0432/2931/5229/files/credit_report_singapore_government.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0212/5733/files/polikigogowofefize.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8607/8369/files/38269916003.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7107/6520/files/lupozaguzek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2425/9992/files/sozawapepazijizojat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6354/1913/files/3558627195.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7844/9307/files/74048985284.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5313/8588/files/arctic_cat_atv_owners_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8220/3801/files/90666443246.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/6785/4248/files/wajorigulinoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3441/8075/files/federal_itemized_deductions_worksheet_2017.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 4

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_off00004a02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A02 5000 bytes
SHA-256: 90e47c9dc41784465b8339e871c7080b194c00907fccde046cf2db8120821c7a
font_01_sfnt_off00005af6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AF6 10980 bytes
SHA-256: ff1ae096cd8c93169e9ffa1ad44722fecd0e413e8c0ea15660ede8cc6f3099df

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