Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ff2db6a416ab956…

MALICIOUS

PDF

41.4 KB Created: 2020-08-03 14:49:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b57c77c996ee725286e721fe395bb06a SHA-1: 6c2321e30e128ff6782fcf1cdd8c99588aaabce5 SHA-256: 0ff2db6a416ab956f84bbf3d1ca5d0e5d5b5b5143bc9da02296ca531123df1fa
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc) that is flagged as malicious. The document body, though heavily obfuscated, contains text suggesting educational worksheets, likely a lure. The presence of embedded URLs and the ML classifier strongly indicate malicious intent, likely to redirect users to a phishing or malware distribution site.

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=elementary+algebra+worksheets+pdf In PDF document text
    • http://files.dasunorthwales.co.uk/uploads/1/3/0/8/130874296/potoluzasiju.pdfIn PDF document text
    • http://files.plantbacteriology.com/uploads/1/3/1/4/131482931/7216935.pdfIn PDF document text
    • http://rivunif.schifferpublishingltd.com/uploads/1/3/1/4/131482995/gonedatunedi-zupazelekuv-kezog.pdfIn PDF document text
    • http://files.rosellepark247.org/uploads/1/3/0/9/130969377/6976100.pdfIn PDF document text
    • http://files.oneninefoursixzero.com/uploads/1/3/1/4/131437765/jelawuvabuner-vaduxaw-jajadotaribano-bidozabopisaju.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/1/0437/1084/0981/files/troy_bilt_horse_tiller_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4483/8303/files/fejalalazub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9886/3771/files/minecraft_building_plans_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2228/4960/files/act_plugin_ffxiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1829/6216/files/49222193503.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9092/8026/files/gonuzodoxalimi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bifezunelavezide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1747/0101/files/55821875043.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3358/4035/files/33106357157.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/23181272522.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0098/7801/files/3268329328.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 2

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_off000063d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63D2 5812 bytes
SHA-256: 4fd129eedeed6f325673b9b7438217d677763da4bebee2dcbf8fd8292fcd6986
font_01_sfnt_off00007787.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7787 9764 bytes
SHA-256: 28d80e4844f54e9d30cfbed7e96e168ebae5b7555b0f49d37b62eccb77cd3001

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