Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9544f757fa4751c…

MALICIOUS

PDF

40.4 KB Created: 2020-08-16 16:02:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0f3bdfb319ffa4d4f42e96dce759fe6e SHA-1: e08f999017bab4508df80c1263df718c98c24941 SHA-256: b9544f757fa4751c6126f75536dff1d3ac2114f39e7d5ef2a185cea4d2b564f0
194 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.com'. This suggests a link farm or SEO poisoning tactic to lure users to a malicious site. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the presence of the malicious redirector is the primary indicator of compromise.

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.com/pify?keyword=basit+bile%25C5%259Fik+faiz+hesaplama+form%25C3%25BCl%25C3%25BC In PDF document text
    • http://files.designhur.com/uploads/1/3/0/9/130969899/bcdcb314a7b3.pdfIn PDF document text
    • http://files.avsheetmetal.net/uploads/1/3/1/4/131409526/nojoba-lefowafukox-kosokowaxemuwo-jofevofexag.pdfIn PDF document text
    • http://files.demarsfarms.com/uploads/1/3/1/4/131407965/pidekarekipagor-lekatudanoti-refibege-jadapemi.pdfIn PDF document text
    • http://files.aascapedesign.com/uploads/1/3/0/9/130969489/9599378.pdfIn PDF document text
    • http://files.volcano-blog.com/uploads/1/3/0/9/130969723/xafemuromaluveg_zodaz.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/1/0437/5108/0090/files/word_bingo_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7217/5781/files/85731438779.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vuxopikuxoxixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5630/8123/files/tinuvedelirogipire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4000/6559/files/76033697202.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7118/3777/files/how_to_play_trumpet_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2082/7300/files/67122245213.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1588/9305/files/38655430614.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4797/5062/files/didokulaligupewa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81667611697.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7044/0095/files/57950274315.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_off00005ab6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AB6 5812 bytes
SHA-256: 245094ec6af15b81d9056c7571aeaf6bad32f24b301a97d0a07bf1736e86daae
font_01_sfnt_off00006da0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DA0 11600 bytes
SHA-256: 9b505b08415b9e7deff3b342cc03b73e1bf5b63e47373921ca08d32b98eea0ed

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