Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b1e59bf3ba5f725…

MALICIOUS

PDF

57.7 KB Created: 2020-08-02 20:48:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5fbb6269f6aececa200014ef0b7a635f SHA-1: 7b9cd7be8786dcc1567e4fa4e6c3f648ca457daa SHA-256: 7b1e59bf3ba5f7251cc4d2bfd00773ca3a474800de96b59fa7a9970734a63837
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service known for malicious activity. The document body, though obfuscated, contains a URL that is also present in the heuristics, indicating a likely lure to a phishing or malware distribution site. The presence of a link farm and a malicious redirector suggests a campaign focused on driving traffic to potentially harmful content.

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=inorder+successor+in+bst In PDF document text
    • http://files.theyarnandi.com/uploads/1/3/0/7/130739780/pozuxatajigeta.pdfIn PDF document text
    • http://files.ameliawilliamsmosaic.com/uploads/1/3/1/1/131164260/livudiwuxupaf-rimerumur-nuwaduvatixi.pdfIn PDF document text
    • http://files.wagnwalkchicago.com/uploads/1/3/1/4/131408502/4bfa57.pdfIn PDF document text
    • http://files.sweetlyhosted.org/uploads/1/3/1/6/131606789/028bb820feecbc.pdfIn PDF document text
    • http://files.wkuprecollegepiano.com/uploads/1/3/1/4/131454165/2029689.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/1/0435/4647/6708/files/gagazebelekikavavidafoxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4488/1059/files/xibozinel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3858/8584/files/8294640629.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7763/9075/files/rukereseduzulidunite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4285/6345/files/dirty_newlywed_game_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dotedijulukamani.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1228/2789/files/10725635969.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2058/2050/files/jasuzadokazojeketu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8899/3699/files/tatiges.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/welilavuruwad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9712/1178/files/9492064649.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1237/4174/files/victory_road_emerald.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
    • https://leetcode.com/problems/inorder-successor-in-bst/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_off00009b4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B4E 4768 bytes
SHA-256: 41e78a6359e4746f26535753ad2887a68c83d64cd98f546658d6f529da6c0ca5
font_01_sfnt_off0000ab8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB8D 14300 bytes
SHA-256: a3715642c63165acfe22ddc1923f247a3507975916031b0cbddc3e6a85f53d36

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