Malicious PDF — malware analysis report

Static analysis result for SHA-256 f36934f24f1621c3…

MALICIOUS

PDF

36.9 KB Created: 2020-08-18 13:42:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: de668e0adaf7a5fb82478aa9102fe821 SHA-1: 41408d51fa0a6b3da7f02fde9aa8b9e184fbbd98 SHA-256: f36934f24f1621c337b47449296c8580716cc7203388b3e4129166b6b735b48b
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at `ttraff.ru`. The document body text, while heavily obfuscated, contains the URL `https://ttraff.ru/pify?keyword=pichuva+kaththi+hd+movie++tamilyogi`, suggesting a lure for users seeking movie content. The ML classifier strongly indicated maliciousness, and the presence of a link farm further supports a malicious intent to redirect users to potentially harmful sites.

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=pichuva+kaththi+hd+movie++tamilyogi In PDF document text
    • http://files.ecolodge-laketiticaca.com/uploads/1/3/2/7/132710592/15d8693cc257b.pdfIn PDF document text
    • http://sinupuwe.southdakotamasters.org/uploads/1/3/0/8/130873715/puruvugobasilagu.pdfIn PDF document text
    • http://sakunik.chelseaplatingcompany.com/uploads/1/3/1/1/131163658/7738415.pdfIn PDF document text
    • http://vedufutik.klineglazeservice.com/uploads/1/3/0/7/130775195/sitovonebaw.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/1/0434/3303/3880/files/misterios_del_cerebro_humano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9980/8149/files/25374154057.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7301/9808/files/gadimafidematabipowirum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7736/0029/files/97512219315.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7880/2846/files/kugowelobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/7106/5503/files/hp_arcsight_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6353/2951/files/13724645586.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/6884/5208/files/clinical_pharmacy_practice.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5372/7387/files/apj_abdul_kalam_speech_on_education.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 3

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_off000044c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44C6 5084 bytes
SHA-256: acb60f674ef0bd70d8c33db0fcdcef7c9155b8646551c78b406fb708f50e2dc4
font_01_sfnt_off00005623.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5623 10168 bytes
SHA-256: 6671c0885a163cddc72ac1ae0d15a0f395abf86c02794c68dc2b95bccd15e75c
font_02_sfnt_off000078ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78EA 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

Open this report in the interactive analyzer, or submit your own file for analysis.