Malicious PDF — malware analysis report

Static analysis result for SHA-256 7534b2517f1690a5…

MALICIOUS

PDF

65.8 KB Created: 2020-08-21 16:24:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 85fb05ce6d5435d53997e656e742b9cf SHA-1: 4a9ab50a75296e7d428e2a22059d391833146e15 SHA-256: 7534b2517f1690a5c4d715c10d7bfda779e62816af911f405923b8dfa704afde
194 Risk Score

Malware Insights

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

The PDF contains multiple links pointing to a redirector service (ttraff.cc), which is flagged as malicious. The document body, though heavily obfuscated, includes the same URL, suggesting an attempt to trick users into visiting a malicious site under the guise of 'Ameba information'. The presence of numerous external PDF links further supports a link farm or phishing lure strategy.

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=ameba+information+and+images In PDF document text
    • http://niziri.thelellowfoundation.org/uploads/1/3/2/3/132302868/d7af05eacc14.pdfIn PDF document text
    • http://files.melanysaad.com/uploads/1/3/1/4/131436978/donixiv.pdfIn PDF document text
    • http://majarej.ioscaid.com/uploads/1/3/0/8/130874001/tajokodujase.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/1/0427/5775/0951/files/12901325907.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9386/8187/files/58979980570.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3547/4590/files/jatikigu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7026/7300/files/99379678329.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5761/7823/files/51385636994.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0184/7708/files/acumed_olecranon_plate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6371/9574/files/wawolinis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/47948794002.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8427/5109/files/demuvurowonosekapujija.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9477/5710/files/32793097756.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9658/1020/files/fadefotinoxatizogozuja.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_off0000be9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE9A 5324 bytes
SHA-256: 9186745875c4b474f5b5c358a419760a97c5c2fc1d4b5839d9c65b6ea7309c1f
font_01_sfnt_off0000d093.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD093 12504 bytes
SHA-256: 9af0fe1629740035021b08698393a8bfed499589c2527a43bf68e3f670cdac8f

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