Malicious PDF — malware analysis report

Static analysis result for SHA-256 74103575ce34f1e5…

MALICIOUS

PDF

49.1 KB Created: 2020-08-18 22:33:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 19116500c5c6cbba2dfea277b7db5e64 SHA-1: fb239407a62d23deeb0f967f8d7dd3af7cb027a4 SHA-256: 74103575ce34f1e5698958928fc62a41bbf4afd9eb92948025d24c3c12864310
194 Risk Score

Malware Insights

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

The PDF contains a link disguised as a software download that redirects to a malicious URL, identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document also features a link farm with numerous external PDF links, many of which are SEO-optimized, suggesting a phishing or scam attempt. The ML classifier strongly indicated maliciousness, and the presence of embedded URLs further supports this assessment.

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=butterknife+android+studio+3.+1 In PDF document text
    • http://files.postyguys.com/uploads/1/3/0/7/130740391/veloduzi-roletepiruram.pdfIn PDF document text
    • http://files.berksdogtraining.com/uploads/1/3/1/4/131452976/e72da7e3d37.pdfIn PDF document text
    • http://files.parnellclothingco.com/uploads/1/3/0/7/130775528/327b06e0de.pdfIn PDF document text
    • http://files.readyforsuccesskits.com/uploads/1/3/0/7/130739570/xonosegox.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/1/0428/9432/7961/files/virology_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7804/8162/files/aluminum_electropolishing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2607/8101/files/dizufaluxoseki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6579/2929/files/61102751515.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7113/6154/files/85464340422.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8082/7558/files/carcinoma_de_clulas_escamosas_de_la_piel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2990/6079/files/gba_rom_set.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5679/8615/files/tidofizutudeke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2874/1285/files/webbie_savage_life.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0185/5646/files/76975735634.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3489/4755/files/9651920139.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3758/1734/files/vepebo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8271/9127/files/vetebajowowojoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4431/4024/files/72592152751.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 7

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_off00007477.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7477 5228 bytes
SHA-256: 67d3b478c4d5f4ca5e7dee3bb89bb4f7723f426a332fb20667cc2706ab218187
font_01_sfnt_off00008660.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8660 14932 bytes
SHA-256: 3abcf44abc3bc6dee3ecfd70e3c21214826b8de21f628da4b904c1a0a4e2f035

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