Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a683b1a1cd49c58…

MALICIOUS

PDF

55.3 KB Created: 2020-08-01 03:00:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a05edf55b63781694bcebeeb8f813ee3 SHA-1: b5258332b6324fed975607ec7740195b78fc6230 SHA-256: 1a683b1a1cd49c5899af9e42d4d1c27d29ddda9bcdeec1adf99b87ed7b725aef
194 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'Cookie clicker save codes' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The ML classifier also strongly indicated maliciousness.

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=cookie+clicker+save+codes In PDF document text
    • http://files.drjustinsinclair.com/uploads/1/3/1/0/131070051/26634.pdfIn PDF document text
    • http://files.mysamcooke.com/uploads/1/3/1/6/131606056/fetelo_xosujelavo_lawebo.pdfIn PDF document text
    • http://files.electricmoonmagazine.com/uploads/1/3/1/3/131383318/512440a80.pdfIn PDF document text
    • http://files.walkingmerchandise.com/uploads/1/3/1/4/131437513/4085811.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5206/4155/files/55815361374.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1111/2092/files/57243384020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4571/6129/files/44915330207.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6078/1465/files/25555130127.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7900/7398/files/git_pull_override.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6289/4498/files/41000356116.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/17232613021.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6464/7077/files/sesubep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8085/2383/files/74380074265.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1682/2692/files/tatiwutetoligejimoxabi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/42778981568.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3133/0969/files/mudepad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6246/8503/files/gilikikuni.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000083e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83E3 4684 bytes
SHA-256: 272db7d13c046322cd2e1414a75b98afae5f7aedb52e84bdbaa18fa232c02058
font_01_sfnt_off000093d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93D6 14320 bytes
SHA-256: 02e130bf2940151abf59824456aa87bf28ded87050c0d88bd5701e1500622159
font_02_sfnt_off0000c1ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1AC 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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