Malicious PDF — malware analysis report

Static analysis result for SHA-256 15a2888accb2ccaa…

MALICIOUS

PDF

44.1 KB Created: 2020-07-29 14:05:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f3e2f162a20330b19041cfdf28c98187 SHA-1: e8006238b9a848b1923feae96634e6a5f8ae8446 SHA-256: 15a2888accb2ccaa52b9c3d293ce19c2f4083acff9292b92f4cb7c56c1150005
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a redirector URL (https://ttraff.ru/pify?keyword=biji+apomiksis+pdf), which is flagged as malicious. The document body, though heavily obfuscated, suggests a lure related to 'biji apomiksis pdf'. The ML classifier strongly indicates maliciousness, and the overall structure points to a link farm designed to redirect users 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.ru/pify?keyword=biji+apomiksis+pdf In PDF document text
    • http://files.masstec.org/uploads/1/3/2/3/132303138/tatiraxeno_gupukitekezev_japawibe_zenanotozerepet.pdfIn PDF document text
    • http://files.absolutelyfabulousfashion.com/uploads/1/3/2/7/132710783/vawojuriniba.pdfIn PDF document text
    • http://files.annemudge.com/uploads/1/3/0/9/130969939/5b0e299dd.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/1/0429/0953/2323/files/weviwalugiziwok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8758/5699/files/63148637605.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5385/0528/files/39590729866.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3313/3209/files/siparitew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1009/7313/files/36725234070.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9110/7742/files/xixopu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/7934438377.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lomapatigusobotatijizu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0186/1528/files/8276488181.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6693/0840/files/51137540912.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8693/6219/files/21507494376.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7750/0057/files/kuxafokexovapivalegu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6877/4807/files/dowam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0842/6143/files/83114859499.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6888/3098/files/32211903967.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 7

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_off0000726f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x726F 4732 bytes
SHA-256: fea3fd07c677d14ac182200f9798c35a9c9f0e23b909fd7c820014e32e9ae411
font_01_sfnt_off0000827e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x827E 9708 bytes
SHA-256: 974474e751d1b3d66eedc28f60f64711ec40bf899caaaf1982d09ea60a57e3fa

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