Malicious PDF — malware analysis report

Static analysis result for SHA-256 152681c705795acb…

MALICIOUS

PDF

40.7 KB Created: 2020-08-14 08:06:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e0655ca72510f66d9ffbcb11201ef670 SHA-1: cb9e863ffe571b2d7b16e160eb3b6d002a90d600 SHA-256: 152681c705795acb4aadb99bc66b6f825a20d703f83b140bf1753fb13dd36cc4
194 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by an ML classifier and contains numerous embedded links, many of which point to a redirector service. The primary redirector URL, 'https://ttraff.ru/pify?keyword=red+background+free', suggests a lure for free downloads, likely a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and extensive link farm indicate an attempt to drive traffic to malicious or potentially malicious 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=red+background+free In PDF document text
    • http://files.mgpsych.com/uploads/1/3/0/8/130814298/vijuniwedifedowa.pdfIn PDF document text
    • http://pabovo.adkaromatherapy.com/uploads/1/3/1/3/131380480/1f0db5.pdfIn PDF document text
    • http://files.deafcan.org/uploads/1/3/1/0/131070178/7985678.pdfIn PDF document text
    • http://files.aikenveterinaryacupuncture.com/uploads/1/3/2/3/132303035/dutexex_sinopegenesoned_sonipori.pdfIn PDF document text
    • http://files.hotspringswinery.com/uploads/1/3/2/7/132710797/855ba54e1d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3121/5774/files/80383957678.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6012/4065/files/mapa_mundi_atualizado_em.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/5192/2087/files/articles_exercises_for_class_4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1872/1192/files/zovevipatin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3097/9495/files/austin_airport_arrival_information.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5989/5717/files/31055817747.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2682/4863/files/zepukosa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/febipak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0180/6997/files/fumemutimogezajapoge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7463/4403/files/51495987169.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4233/3087/files/cpted_survey_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/83463419879.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5905/2706/files/74228507727.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F07 5192 bytes
SHA-256: 49697da5b04de7f8d5362c2ec4220fafa83ae3486302fa1b0815a8b33693dc41
font_01_sfnt_off000060be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60BE 8268 bytes
SHA-256: 44b177450476c416fcd18d665294b8a4dd80e6b28c93f11e70a9b4a3809fdc40
font_02_sfnt_off0000775d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x775D 8884 bytes
SHA-256: 93c7e0643317b4457d908ce69a09ec2107c1884eeec407221ef8801f47c8a39e