Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5ef5b3c8529a016…

MALICIOUS

PDF

41.3 KB Created: 2020-08-06 23:57:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6d88e48ed83accba0fe4acfc340171e2 SHA-1: 810ba309c0da1fd24d7d4c3c988da0043c9e70fc SHA-256: d5ef5b3c8529a0162af9cf7ca3f3dc469981a663c6e21c7cfc512418a6e40c84
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains multiple embedded links, with one identified as a known malicious redirector. The document body, though heavily obfuscated, contains the malicious URL. This suggests the primary goal is to lure the user to the malicious site, likely for phishing or to download further malware. The presence of numerous other PDF links points to a link farm strategy.

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.ru/pify?keyword=betacaroteno+beneficios+pdf In PDF document text
    • http://files.birthandmotherearth.com/uploads/1/3/0/9/130969507/3249177.pdfIn PDF document text
    • http://files.islamiccenterdm.com/uploads/1/3/0/9/130969153/wetedadosaval.pdfIn PDF document text
    • http://wejuleba.ajcollectablecards.com.au/uploads/1/3/1/6/131606552/kovewupope.pdfIn PDF document text
    • http://files.tanheathhunt.com/uploads/1/3/1/4/131453657/d7770.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/1/0436/4979/4213/files/44478132741.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3015/1330/files/44861487020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8611/7019/files/assembly_hello_world.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8200/7199/files/12021979646.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0342/8515/files/break_even_analysis_formula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lugapib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9869/3022/files/database_systems_an_application_oriented_approach.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2511/2994/files/avl_tree_java_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7170/0120/files/99126817558.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0955/5107/files/94159975170.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7111/0308/files/intel_hd_graphics_3000_windows_10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0528/6296/files/banizutakofolaxaje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8946/8328/files/jigazixufimipomukad.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_off000060e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60E0 5308 bytes
SHA-256: dd59b4944d44a861ebea9e854cb31de32e060c00a36dd02fc12276c7157974ef
font_01_sfnt_off000072f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72F4 10980 bytes
SHA-256: 2d275e6703845b1aee5bd2017b2ba2ae5ae7b344caabcfbaebbacc6dc037136d

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