Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca2b26a7a8c75e45…

MALICIOUS

PDF

50.7 KB Created: 2020-08-21 00:01:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 61b8cda8b666cd67443c2148dc3ea73c SHA-1: beb8c57e781b319579121d7b21563ae5dbf70b26 SHA-256: ca2b26a7a8c75e4592d725b328d5cf66aa3a8cf9f772b30942b08c87e74906f0
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for phishing or malware distribution. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=positive+adjectives+list+pdf'. Another heuristic flagged the document as a link farm, containing 30 external PDF links, many hosted on cdn.shopify.com. The document body itself is heavily obfuscated but contains the malicious redirector URL and several benign-looking PDF links, suggesting a lure to a malicious site disguised as a resource. No scripts were extracted, limiting further analysis of the payload.

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=positive+adjectives+list+pdf In PDF document text
    • http://files.thornhillschool.org/uploads/1/3/1/3/131382583/vavuwila.pdfIn PDF document text
    • http://files.2dacademy.com/uploads/1/3/0/7/130739116/bujojeme.pdfIn PDF document text
    • http://files.chacee.org/uploads/1/3/1/6/131606963/jevotejezusabop.pdfIn PDF document text
    • http://files.anneyleather.com/uploads/1/3/1/6/131636834/nexebasagew-bikuluginuxa.pdfIn PDF document text
    • http://files.littlefootbridges.com/uploads/1/3/0/7/130740517/tutikupipupobufu.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/1/0429/5891/3689/files/fesixewebufuxubiradut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/queen_perform_accordingly_crossword_clue.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8030/9141/files/72053996179.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5419/4085/files/8480830250.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9183/6566/files/62345918363.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5114/7676/files/apery_constant.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6322/9078/files/exercices_sur_les_verbes_etre_et_avoir_au_prsent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2556/2791/files/mosagowadimojilogexe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0236/3045/files/kivod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9033/7189/files/kurojaremajiwuvuvimojozod.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 6

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_off00007c7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C7B 5188 bytes
SHA-256: b1796b60c2964ec59b01f7660ef23893c9523c940bbbb333456c0ef6cad8c2be
font_01_sfnt_off00008e48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E48 15792 bytes
SHA-256: 9f4f372a648c55db8ad7c593a9e010a5184326340f6901d5adbc0f2d916b8b38

Open this report in the interactive analyzer, or submit your own file for analysis.