Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7aeb45dafbc976c…

MALICIOUS

PDF

42.1 KB Created: 2020-08-08 04:08:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a13999b88b9d8c04bbf3efac0d9ab4e1 SHA-1: 1f8038c1396d893734f29077dc52439c3ea8c3a5 SHA-256: d7aeb45dafbc976c63b38551ff246f67f5dd0cbb83162105376e9b3983eed762
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The ML classifier also strongly indicated maliciousness. The presence of numerous links, including one pointing to `https://ttraff.ru/pify?keyword=bharat+acharya+microprocessor+pdf`, suggests a link farm or redirection strategy to distribute malicious content. No scripts were extracted, but the PDF structure itself is indicative of a malicious lure.

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=bharat+acharya+microprocessor+pdf In PDF document text
    • http://files.hannahchambers.net/uploads/1/3/1/3/131379111/tegamokibuj.pdfIn PDF document text
    • http://rasujax.stjohnofgod.net/uploads/1/3/0/7/130739678/1144000.pdfIn PDF document text
    • http://files.youthdentalconference.com/uploads/1/3/0/7/130776167/ruvived.pdfIn PDF document text
    • http://files.bmldi.com/uploads/1/3/2/6/132681362/mumibizobo_koxipiruvotina.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/1/0433/0687/7080/files/tagesagebog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0389/6230/files/wizatoritix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2178/6521/files/fevodupes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5265/2951/files/familaworexo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6728/4383/files/xinat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6706/4998/files/gavubosetuwinidekawe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1650/0886/files/abecedario_chino_y_su_significado_en_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9359/9132/files/22686632303.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7583/5806/files/characteristics_of_a_teacher.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1931/3062/files/joindre_fichier_dans_word.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5491/3943/files/80471916847.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4578/1665/files/wibazipagerinabowezi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3619/5488/files/vosegimogizovubizejisa.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 6

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_off00005834.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5834 5516 bytes
SHA-256: 125a8f3864ce4c8fd00d4f84f32305c883b709cb4ce9a639197d48be46abde16
font_01_sfnt_off00006ad4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AD4 15224 bytes
SHA-256: ddb4c647ae83d2598cd7e9d4151265155ad5a7ef09be0b341780726248823596

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