Malicious PDF — malware analysis report

Static analysis result for SHA-256 019b97df0c643535…

MALICIOUS

PDF

36.9 KB Created: 2020-08-04 13:14:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0cb096c58641c45e219f83dcd48dc83f SHA-1: e85dd84de47e90fbe1ecb778a6a976957da66eb5 SHA-256: 019b97df0c643535d984d1442234f178b8f4bfdaa2d58c1d92b40a07cf27dd7b
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, including a primary redirector at 'https://ttraff.cc/wb?keyword=phase%202%20jolly%20phonics%20worksheets'. This redirector is flagged as malicious and is part of a link farm, suggesting a phishing or malware distribution campaign. The document body, though heavily obfuscated, also contains this URL and other PDF links, reinforcing the lure of educational materials to mask malicious intent. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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/wb?keyword=phase%202%20jolly%20phonics%20worksheets In PDF document text
    • http://files.thedinopark.com/uploads/1/3/2/7/132740415/6535022.pdfIn PDF document text
    • http://files.monetwithacamera.com/uploads/1/3/1/3/131379205/8107137.pdfIn PDF document text
    • http://files.fasthandyman.us/uploads/1/3/0/8/130814279/2836557.pdfIn PDF document text
    • http://files.arcrestour.com/uploads/1/3/1/6/131606491/gurar-takonaxino-fezudo-tipigewujugora.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/1/0437/6847/9893/files/lelizatujanam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3153/5524/files/93594949255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0835/2679/files/verikox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7102/0964/files/mobility_scooter_repair_manuals_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7794/9848/files/bokojarazalef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3075/8054/files/89524777533.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2804/6233/files/88805396300.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8611/0110/files/jadewugom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2290/7554/files/15070367654.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6750/6849/files/zesibolafepurox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5148/2278/files/99563442688.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3033/2060/files/57802659099.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
stream_004_off0000637f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x637F 10472 bytes
SHA-256: 197ed404c3e93b62c631e46ddf4d6198dfb664b9d69ea687003d403b6cbb7792
font_00_sfnt_off000050bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50BB 5488 bytes
SHA-256: f88a8b3d4a5af6c5a596e62a27cffe2b80eebb5655bdfa3e51fd2db525bc474f

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