Malicious PDF — malware analysis report

Static analysis result for SHA-256 5771aa96ea21d366…

MALICIOUS

PDF

41.9 KB Created: 2020-08-05 10:43:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7554b311f6786735dc28c5d71e539ff4 SHA-1: ef859efb4345d97d0ee4b803938c8e6cfa15ee3d SHA-256: 5771aa96ea21d36619b7250c4020917ede6bae59779ff5790d093ee360681651
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a malicious redirector link disguised as a 'fastest pdf reader android free' download. The document body, though heavily obfuscated, contains fragments that suggest this lure. The PDF also contains a large number of external links, many pointing to Shopify domains, which is indicative of a link farm used for SEO poisoning or to host malicious content. The primary malicious IOC is the ttraff.com redirector.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=fastest+pdf+reader+android+free In PDF document text
    • http://files.luzthecakelady.com/uploads/1/3/1/6/131637850/fc1baa.pdfIn PDF document text
    • http://files.makewavesswimschool.com/uploads/1/3/1/4/131483002/942080e7d3cf6f.pdfIn PDF document text
    • http://files.david-reinhard.com/uploads/1/3/1/4/131438639/vavorawesixeku.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/1/0429/9217/3217/files/sarupisuwalewokakifado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5290/0260/files/wulalik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2814/3510/files/69217591503.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6056/0025/files/3739273051.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6992/1690/files/91123658361.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6781/0726/files/35062338101.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5502/2234/files/newar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4446/8901/files/16671228644.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7015/2088/files/sukulexekufif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2287/4781/files/canasta_basica_en_el_salvador.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8037/5704/files/26781847814.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5850/2563/files/36991631425.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
🗂 Part of campaign: david-reinhard.com 3 samples

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_off00006777.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6777 4960 bytes
SHA-256: 3f2c597579c007db2fae0de14d5af63cfecbf2ea6114d996bc320022d11f8490
font_01_sfnt_off00007868.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7868 10044 bytes
SHA-256: 59011fa7a9b81a1487fb6dfdb328457b323c1c9a142ee2fa1a743a3d54c22b8e

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