Malicious PDF — malware analysis report

Static analysis result for SHA-256 142cd01cdea32fc1…

MALICIOUS

PDF

42.3 KB Created: 2020-08-08 22:58:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e41d9ba4b6953abbcc6e8a08aad5baec SHA-1: 2c257ff9755becfd5b266a7ffd0627be273623c1 SHA-256: 142cd01cdea32fc15c18587d5c660a4a3e3dd88342bd75ed49d0e32060936302
194 Risk Score

Malware Insights

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

The PDF contains multiple links, including one to a redirector hosted at 'ttraff.cc', which is flagged as malicious. The document body and embedded links suggest a phishing attempt disguised as a free book download, aiming to redirect users to potentially harmful content. The ML classifier strongly indicates maliciousness.

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=clarence+larkin+books+pdf In PDF document text
    • http://funenidep.oneyrbible.com/uploads/1/3/0/7/130738531/7598f8abd6365.pdfIn PDF document text
    • http://files.wellnesswithmayanne.com/uploads/1/3/2/7/132740838/pegenasimivuxuf.pdfIn PDF document text
    • http://files.hellenphotography.com/uploads/1/3/1/4/131454345/1c1c782276a.pdfIn PDF document text
    • http://files.bleakhilllincolnlongwools.com/uploads/1/3/1/4/131407918/mojulowifikuviv.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/1/0430/8333/3785/files/60617539781.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1826/2427/files/vikigexevulabu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4995/1138/files/vakuzedelonevetateju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9757/0980/files/30418116385.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5735/6710/files/73737441276.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5560/4121/files/kexefusomurugov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7365/9292/files/mechanism_of_symbiotic_nitrogen_fixation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1679/7857/files/thoracic_back_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8241/6281/files/titopaduno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/nufeparuraso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9567/8359/files/business_life_cycle_definition.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_off00006527.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6527 5256 bytes
SHA-256: 6a1fd4152adb96e3cc6370fff20c74106ec1c87bee6671b1330612660c5655be
font_01_sfnt_off0000770f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x770F 10940 bytes
SHA-256: 0947e1ba2d0ed92d6a3d57be59b05df4f17daa9e4faa83fc518c338b9212ee36

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