Malicious PDF — malware analysis report

Static analysis result for SHA-256 035cbdd477816a96…

MALICIOUS

PDF

50.3 KB Created: 2020-08-11 15:35:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 913ed26adba2b5960e85c8aef424a9c0 SHA-1: b272a167e8450910cb486d7de4a0f917877ec6ba SHA-256: 035cbdd477816a9688f4d01f32301479b35cedf33b22b91cf97ad986ddd5aa90
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.com) that is flagged as malicious. This indicates a likely phishing or malware distribution attempt, leveraging a link farm to obscure the final destination. 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=aldol+condensation+notes+pdf In PDF document text
    • http://files.robbinsnestcollectibles.com/uploads/1/3/1/3/131381066/5828639.pdfIn PDF document text
    • http://baxupako.springersofoz.com/uploads/1/3/1/3/131380600/wefawotefipokig.pdfIn PDF document text
    • http://files.waywaystore.com/uploads/1/3/0/7/130775017/lobesulavizuwupule.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/1/0432/4950/0315/files/roxojiwiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4311/9527/files/historia_de_la_contabilidad_gubernamental.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8893/6102/files/10162304982.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6916/8021/files/amine_functional_group.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0741/8273/files/viwugadonuxawuwofuge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5742/2229/files/75620724427.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9162/3074/files/javafx_change_background_color.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7153/7301/files/norezulesixosipug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5210/3842/files/backward_design_lesson_plan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8415/9903/files/genie_garage_door_opener_troubleshooting.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4145/4240/files/sojux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6919/1832/files/3183747691.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_off00008745.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8745 5040 bytes
SHA-256: 619a24459c2e4edf85b1e4c357655d25d574c06c2bb466e04d2c66d18dcc73dd
font_01_sfnt_off0000987f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x987F 10572 bytes
SHA-256: 64099784472592b011e5fb6761368de0752302effc972c4313986a180ff4b361

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