Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a440aa64eb5e487…

MALICIOUS

PDF

40.2 KB Created: 2020-08-07 15:58:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 26480cac236d1d9496777f0f026d8de7 SHA-1: 3e65e10716c39da62979a57b067c8f42d3dc9d8d SHA-256: 0a440aa64eb5e487d4e821b1b55e35eaeaa85f5605dd7c23a7590366c4ed3331
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as legitimate academic resources, but it redirects to a malicious domain. The primary redirector URL is ttraff.com, which is flagged as malicious. This suggests a phishing or malware distribution attempt disguised as a document download. No scripts were extracted, but the PDF structure and embedded links strongly indicate a malicious intent.

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=uniformly+accelerated+motion+horizontal+dimension+problems+with+solution+pdf In PDF document text
    • http://xurumog.ctnonline.com/uploads/1/3/1/3/131383483/tuzisiwevobewo.pdfIn PDF document text
    • http://gitizota.bellabirth.org/uploads/1/3/1/4/131438477/wofukijav.pdfIn PDF document text
    • http://files.smile2340.com/uploads/1/3/1/3/131384771/nikojaxuvupu-texeganev.pdfIn PDF document text
    • http://files.hollymoxley.com/uploads/1/3/1/6/131637362/af7c1033aa.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/1/0448/6037/5201/files/olivier_blanchard_macroeconomics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5060/5461/files/type_of_learning_disability.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/2195/4206/files/oregon_wine_country_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1049/7434/files/somilazaki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1266/8066/files/73838015785.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3728/5797/files/75830486890.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9652/3423/files/english_stories_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3224/7445/files/647536582.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7590/2363/files/88052527879.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1347/1384/files/40207680940.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: reversac-traductions.com 3 samples

Related samples 3

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_off00005f4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F4B 5772 bytes
SHA-256: bf4b1d5f365fa19ca570b290b3b32431a8a61659e2d9235ea414a4f2b838c301
font_01_sfnt_off000072de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72DE 9540 bytes
SHA-256: 2c79f891d967276d2b40600644bcc17b81f74169bf3d4ab62405ce0789cd2b53

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