Malicious PDF — malware analysis report

Static analysis result for SHA-256 82a05518ab9cd470…

MALICIOUS

PDF

45.2 KB Created: 2020-08-22 01:37:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: aa7c90f0e0ea931d8d1474b62a3795f9 SHA-1: 2f5060c1af833747cc6aa2b5fe6c13b93c0c5373 SHA-256: 82a05518ab9cd4709c96bfffedffcd1d29135d5fd941c0a0665ce9a9b1cdb300
234 Risk Score

Malware Insights

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

The PDF contains numerous links designed to redirect users to malicious sites, masquerading as a "Vidmate status video" and employing "free-download phishing" tactics. The primary redirector identified is https://ttraff.cc/pify?keyword=vidmate+status+video, which likely serves as a gateway to further malicious content. The ML classifier strongly indicated maliciousness, supporting the observed link farming and redirector behavior.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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=vidmate+status+video In PDF document text
    • http://vamevil.tarpanpartners.com/uploads/1/3/0/7/130739274/dilojoxo.pdfIn PDF document text
    • http://repexib.massillontigerinstructionalresources.com/uploads/1/3/1/3/131380429/rinetoretisirigubila.pdfIn PDF document text
    • http://files.concordiaball.at/uploads/1/3/0/7/130739590/1446333.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0215/7466/files/duronemafexugezezimadabe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3331/9831/files/appointment_letter_format_for_engineering_college.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2216/3876/files/jafipaduburazonixut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7417/5644/files/popaladifesariz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/surorut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2973/2248/files/kemame.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7500/9686/files/opossum_tracks_in_snow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7643/5621/files/vexakarul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7096/3350/files/duwilasaretutalinabegaxar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6620/4066/files/sotovag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8424/2334/files/zededasetutoxisodijol.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65DF 4868 bytes
SHA-256: 257a6c1bac89fbf5d4ad74c1c6b9af0cc75fd5d74050bf5d81994d49609504ee
font_01_sfnt_off0000765e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x765E 10076 bytes
SHA-256: 764cdbb9789893ece6db9c77d4374d7f3fcd592dc6c713a0df1be7bd3ef5d816
font_02_sfnt_off0000990c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x990C 3400 bytes
SHA-256: b69818e637cde1360e902dc7d3d453551f01227e033f2fd59ce6b303d43e6d5a