Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bc13c0c9b77d7de…

MALICIOUS

PDF

43.5 KB Created: 2020-08-04 23:21:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e9470331da8811a2a915d2f6f5b61a3f SHA-1: e91e5370cfedfa92d30df1057253013b147ce05b SHA-256: 7bc13c0c9b77d7de5ceff7085811dbf2cfdf6cb148f09185ab62837b4118ea10
194 Risk Score

Malware Insights

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

This PDF file contains numerous embedded links, many of which point to a redirector service designed for SEO spam and phishing. The primary lure appears to be a fake download for "Arduino programming basics pdf", which redirects to the malicious URL https://ttraff.com/pify?keyword=arduino+programming+basics+pdf. The ML classifier strongly indicated maliciousness, and the presence of a link farm suggests an attempt to drive traffic to malicious or deceptive content.

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=arduino+programming+basics+pdf In PDF document text
    • http://files.chilternharriers.com/uploads/1/3/0/7/130775977/lapagomoranemuw.pdfIn PDF document text
    • http://files.esthersgardenofhealing.com/uploads/1/3/2/7/132711947/1838b99.pdfIn PDF document text
    • http://files.newboldmusic.com/uploads/1/3/1/4/131406149/kulatonokabapes.pdfIn PDF document text
    • http://files.writepathint.com/uploads/1/3/1/4/131408537/topazexofaro.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/1/0431/4752/6293/files/fundamentals_of_corporate_finance.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6681/8721/files/wafugiguxojinosim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8713/4882/files/pumarevo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5601/3205/files/dancing_man_gif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6061/6599/files/pimara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/regavoxuvuzitavilugasom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/3444/7770/files/novosti_iz_izrailya.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8788/8535/files/chemistry_8th_edition_zumdahl.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0604/2023/files/kenmore_600_series_dryer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5796/2405/files/tozukomusivovusururi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/28821374719.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 5

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_off00006b68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B68 5572 bytes
SHA-256: 33ab7daa636e3fb8d661328e60b973ee17fd46ba94791356c02941023796d4b4
font_01_sfnt_off00007e47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E47 10260 bytes
SHA-256: 85c8200c6db8d6f8dc28e2d4bdac1a8167ab3d0f94588c6f152df7972442947d

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