Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb9bda473bbfeb94…

MALICIOUS

PDF

69.9 KB Created: 2020-07-26 01:35:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d22f2b25d907e053a9349eb7ea91f084 SHA-1: 5116f50a7516f3382f190575e0359bddbf14a52a SHA-256: fb9bda473bbfeb9477a49bee6d121162f3eb295cf22c5ae45dc550a1f32c8816
194 Risk Score

Malware Insights

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

The PDF contains numerous links to redirector infrastructure, specifically identified as a malicious redirector and an SEO link farm. The document body, though heavily obfuscated, suggests a lure related to 'Blend for visual studio 2017 tutorial pdf'. The primary malicious URL identified is ttraff.cc, which is flagged as a known malicious redirector.

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=blend+for+visual+studio+2017+tutorial+pdf In PDF document text
    • http://files.sarahkernohan.ca/uploads/1/3/2/7/132740408/temomawilalejin-basagiji-subofebeluji-gifetaz.pdfIn PDF document text
    • http://files.lakeshorequiltcompany.com/uploads/1/3/1/4/131438056/ludota-manozukafirujir.pdfIn PDF document text
    • http://files.lavernerosephotograpghy.com/uploads/1/3/0/7/130775980/pejujuriname-tepawosolabu-fidinadamig-mamitepana.pdfIn PDF document text
    • http://files.wholenikolenutrition.com/uploads/1/3/1/4/131406036/7326901.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/1/0438/2598/7734/files/94794627928.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6694/9799/files/83485500960.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2118/9788/files/78909103833.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2174/6847/files/mupuwotidi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6946/4991/files/repizabumitow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pexivopagutufaxusezonav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0349/4043/files/4990094783.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2675/0362/files/56743596906.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2961/1171/files/zejorepobilugixazomak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4204/6103/files/tolazitemepuwonubo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9784/8996/files/bazusinagekewopuxesuwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/31321710084.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 7

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_off0000ce9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE9F 5432 bytes
SHA-256: fdc5014e67ed6fa557bb0816b497b7100cda491d5942fc2c685c9c0ce7ab0c79
font_01_sfnt_off0000e133.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE133 12792 bytes
SHA-256: 71468f42972015342bd444cd91c4003e759d0d602503a4457d3b9dc57e094c91

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