Malicious PDF — malware analysis report

Static analysis result for SHA-256 657585513d57e3fe…

MALICIOUS

PDF

45.3 KB Created: 2020-07-27 07:36:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a4027d4da77dde0694058e567c25e74c SHA-1: b51a6b6ef15cbd1a962ca4c546c405cdf12b0c22 SHA-256: 657585513d57e3fe036a22a2d718ae052b2b40043db2becf421f6ca55380949d
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirection and a link farm, including a critical finding for a link to known malicious redirector infrastructure. The embedded URL points to a redirector that likely leads to a phishing or malware download page. The ML classifier strongly supports the malicious verdict.

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=video+er+for+iphone+xr In PDF document text
    • http://files.maison-de-villars.com/uploads/1/3/1/4/131455398/6704720.pdfIn PDF document text
    • http://files.wroughtbylight.com/uploads/1/3/0/8/130874361/49c771e9a4.pdfIn PDF document text
    • http://files.matchmypartytheme.com/uploads/1/3/0/7/130775651/rujezela_jawabar.pdfIn PDF document text
    • http://files.lightsourcechiropractic.com/uploads/1/3/0/8/130813898/8397318.pdfIn PDF document text
    • http://files.nphsjrwolfpack.com/uploads/1/3/1/4/131483253/pageponiputi_gosalobire_vopepas_fatibo.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/1/0430/3526/3130/files/12332885948.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1386/4602/files/wimezebuvap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78549170372.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1651/0873/files/zemifabowalolugedi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nebisineseboji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6006/7480/files/10979584978.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bekikelazipilexujewa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0595/9574/files/nerasilojusepowoxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3152/6557/files/soduvazififawedoveda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6123/8168/files/82202793434.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5892/9570/files/keterativivojuterapopido.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8307/1650/files/6360047859.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2658/7549/files/toraxunenijurufoxum.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000075c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75C8 4448 bytes
SHA-256: 84bc64491290cd3bef7288d6dd520240813688c45385def52efbdc2be0898f8c
font_01_sfnt_off000084cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84CD 10284 bytes
SHA-256: 3d15f680eeb23a6f1afaa9903e4ab09efaf9b73d9a00210a397df6a0bbb545d9

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