Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1febb6decbdf6de…

MALICIOUS

PDF

43.3 KB Created: 2020-08-12 03:59:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2ef7dd385e48bdbf41ca36db8701959a SHA-1: c8905a8b5ff925f50457d68a8ffc3b4d59f4565f SHA-256: c1febb6decbdf6dea4f9198e3425ae1296220a8a1e4656e96de03896b70132d3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains text referencing 'Hitachi absorption chiller catalogue pdf' and the malicious URL, indicating a lure to a phishing or malware distribution site. The ML classifier also strongly flagged this PDF as malicious.

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=hitachi+absorption+chiller+catalogue+pdf In PDF document text
    • http://files.alphahomehealthandhospice.com/uploads/1/3/2/7/132712661/juwoxirepidagavuboz.pdfIn PDF document text
    • http://files.exploreniseko-activitycentre.com/uploads/1/3/0/8/130814298/datek.pdfIn PDF document text
    • http://bilit.indioshuichol.org/uploads/1/3/0/8/130874284/df51eea133.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/1/0433/5622/5688/files/lotatunepapewesikok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0102/7493/files/guwetasoxunaponazitivarij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0821/2638/files/addition_and_subtraction_of_unlike_fractions_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3028/1381/files/xasegevipezubofisulilotuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7341/3032/files/100_statistical_tests_in_r_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2996/9561/files/32125378885.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3976/0295/files/plasenta_previa_adalah.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0121/5138/files/achilles_tendon_repair_protocol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5039/4019/files/15903580804.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1313/4741/files/zesifetexuxiwageb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0737/6542/files/xuruvuvuliwesajawolobi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7495/9000/files/nugumuxedixuvati.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005cc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CC9 2828 bytes
SHA-256: 2f32373152b86590eb5c993bf8dbb57d20fc33770b92bc1ec6b5fd985d660553
font_01_sfnt_off000066d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66D2 5516 bytes
SHA-256: 3665c1542ec215a6a409c7200e755f130c5cff4280ed3800bd676c2d8cdd2c39
font_02_sfnt_off0000797b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x797B 12112 bytes
SHA-256: c13bde72ba1920fde06c3bfe2ee688ce9a1f71bd1a1596e33f2ef2a2ca4fc26d

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