Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7681b2a5df7e9af…

MALICIOUS

PDF

41.2 KB Created: 2020-08-21 16:09:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5a217b74b046ba43db7d8169ac486fa6 SHA-1: 4b8b981126bcea174c42573ce10dcba0a445aa6d SHA-256: d7681b2a5df7e9afd91d96c138c5708b803f44fd4d373b44a4b5cf99096ac409
234 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link and a large number of external links, suggesting a link farm or redirection tactic. The document body's content, though garbled, includes references to 'Winrar cho win 10', indicating a lure for software. The presence of a password archive lure heuristic further supports the idea that this document is designed to trick users into downloading or accessing malicious content, likely through the primary malicious URL.

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.
  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=winrar+cho+win+10 In PDF document text
    • http://miduvidus.driftriders.org/uploads/1/3/1/3/131383651/8551874.pdfIn PDF document text
    • http://files.ancientwavestudios.com/uploads/1/3/2/7/132712508/mivoduvazebeji-niludojogakoku.pdfIn PDF document text
    • http://lexan.raschoolofexcellence.com/uploads/1/3/1/4/131453870/betasuxox-sigesixudo-manikal.pdfIn PDF document text
    • http://files.clemsonchronicle.com/uploads/1/3/1/3/131378990/pavefef.pdfIn PDF document text
    • http://tulipel.installatiebedrijf-altena.com/uploads/1/3/1/6/131636664/a426c2b64.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/1/0431/7003/7924/files/occupational_therapy_intervention_for_autism.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3767/7989/files/37351550271.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6593/3985/files/ziguroxisuzisakomosebig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9946/4611/files/93110838553.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9592/4637/files/7623234547.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5802/1027/files/61385595252.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1813/3405/files/56698194306.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4546/9858/files/8656073774.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_off000063db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63DB 4976 bytes
SHA-256: 380999f4fea126862e2ae4e8d023f5d10cda47a2df73b0837b1077c11a4c7c0d
font_01_sfnt_off000074d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74D1 10932 bytes
SHA-256: 58a9ec28393db33d60089ff81caa96af86b97026ff35b413b71252a89a212dcb

Open this report in the interactive analyzer, or submit your own file for analysis.