Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fb4884f92b00cb1…

MALICIOUS

PDF

41.8 KB Created: 2020-08-07 02:56:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d602a58d12827a04c8472b8020fbad1a SHA-1: daac22909770c062e5338e683d7d76ec539dac14 SHA-256: 9fb4884f92b00cb18c21dd23d1e8b7a5bd7a51bca1c396e92373a2eae55fb4e9
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious domain, disguised as a search result for a common Excel query. This suggests a phishing or social engineering attack aimed at tricking the user into visiting a malicious site. The PDF also contains a large number of links to other PDFs hosted on Shopify, likely part of a link farm to improve SEO for malicious content. No scripts were extracted, limiting the analysis of direct payload execution.

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/wb?keyword=how%20do%20you%20unhide%20multiple%20worksheets%20in%20excel In PDF document text
    • http://files.toledoia.com/uploads/1/3/1/6/131636766/rusozidobuw.pdfIn PDF document text
    • http://kamagu.harvardsouthshore.org/uploads/1/3/0/7/130775403/696368.pdfIn PDF document text
    • http://lenos.lumen-stem.com/uploads/1/3/0/7/130776326/paredosurozo.pdfIn PDF document text
    • http://files.sarahmacillustration.com/uploads/1/3/0/7/130776698/juvigexu.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/1/0428/1863/3894/files/model_free_adaptive_control_theory_and_applications.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1019/4582/files/computer_arithmetic_algorithms_and_hardware_implementations.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9074/7295/files/geketixidoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8580/7269/files/xubonaxobiwapigajevo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0834/9592/files/60295609797.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7355/1001/files/27424019722.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0223/2983/files/78990815092.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7485/4820/files/fadidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/vanune.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wiwatubaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8153/9483/files/27312712596.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9799/0055/files/zifefuxutonoziwiwa.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 4

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_off00006634.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6634 5392 bytes
SHA-256: 7480da3269c4b324960858d274d7baf780a4d044a0fd27f38ea0d00275012d22
font_01_sfnt_off00007876.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7876 9812 bytes
SHA-256: 273b9d3ef5e51c7763ea4ab85284d6d89ee0163ebe19718c5b818bc790c6326a

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