Malicious PDF — malware analysis report

Static analysis result for SHA-256 f28583f1ff4bb0fe…

MALICIOUS

PDF

44.8 KB Created: 2020-08-21 02:05:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 74223b1fe15bc4aea849a9b15ec62a58 SHA-1: 3de4b3e1d48c7f3973bd83ca187c2b3b0f006eec SHA-256: f28583f1ff4bb0fea98f76070c16d0b12c95e67ffa3db01f67f48e9e93dddb95
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=cinemagraph+pro+android'. This URL is presented within the document body, disguised as a download for 'cinemagraph pro android'. The PDF also contains a link farm heuristic, with numerous external PDF links, some of which point to potentially malicious domains. The primary intent appears to be directing users to malicious infrastructure via a deceptive link.

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.cc/pify?keyword=cinemagraph+pro+android In PDF document text
    • http://files.netherlandsandcoloniesrevenues.com/uploads/1/3/0/8/130874620/sunofunonowisi-vipakisizup-tovokonirak.pdfIn PDF document text
    • http://files.christophervonspitzer.com/uploads/1/3/0/7/130739155/6994799.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/1/0431/4352/8609/files/obtenir_attestation_de_formation_aux_premiers_secours.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8590/5576/files/machine_learning_from_theory_to_algorithms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69296453687.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5279/2982/files/alteryx_designer_admin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9947/8434/files/charbroil_oilless_turkey_fryer_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4610/0374/files/76752764184.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3861/2378/files/99476313023.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7148/0742/files/exercicios_de_geometria_angulos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8365/2506/files/dibisalik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3792/5269/files/labview_core_3_course_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1256/2849/files/florida_renters_lease_agreement_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/7248/8359/files/remimakuzosuzogulikab.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_off000071c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71C1 5068 bytes
SHA-256: 3de4cc06bad1d063dea4d37124ca7d04e91e40536764304c24eb5e7fc6747830
font_01_sfnt_off000082c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82C7 10444 bytes
SHA-256: f2b02d1967e0486fd94c1a7666c2a5a5dd4550365497f718a4062ccd83228154

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