Malicious PDF — malware analysis report

Static analysis result for SHA-256 3420dbf37bd80be3…

MALICIOUS

PDF

33.4 KB Created: 2020-08-10 15:02:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e98a8356dc457487bd9620269a965660 SHA-1: 142d15202c95223f053e041870235da4377a44dd SHA-256: 3420dbf37bd80be30f1b3eb924457f0fcdccdd403468cb2bf76840cc7dd6aa98
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by an ML classifier and contains multiple heuristics indicating malicious redirector links. The document body contains a link to 'https://ttraff.ru/pify?keyword=apk+convert+pdf+ke+word+di+android', which is identified as a malicious redirector and part of an SEO link farm. This suggests the document is designed to trick users into visiting malicious websites, likely for phishing or malware distribution.

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=apk+convert+pdf+ke+word+di+android In PDF document text
    • http://files.barbechamblissauthor.com/uploads/1/3/0/7/130740563/3626560.pdfIn PDF document text
    • http://tajawoder.theguitarmedic.net/uploads/1/3/1/4/131406436/xokatugesanepomup.pdfIn PDF document text
    • http://files.vislitsandbox.com/uploads/1/3/0/9/130969965/repafoxorezu_mivukag.pdfIn PDF document text
    • http://gupodepu.ctsulianah.com/uploads/1/3/2/6/132696414/nuratenitizafemi.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/1/0432/5706/9736/files/42098292353.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4376/3862/files/15387841186.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8667/4088/files/castrol_edge_turbo_diesel_5w_40.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9476/1877/files/anatomie_de_appareil_digestif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3518/1724/files/is_kissanime_down.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0459/1255/files/96184738747.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4953/3088/files/the_celta_course_trainee_book_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7181/3285/files/tipos_de_actuadores.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0300/9430/files/7757574226.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7387/2807/files/mekesofaxovojujudijaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6728/5410/files/class_12_accountancy_project_segment_analysis.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
🗂 Part of campaign: barbechamblissauthor.com 3 samples

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_off00004739.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4739 5144 bytes
SHA-256: 8eb69e4ef4a35c0f5c5e6092314ead2323fb0f017da8f372174f3e5d499ac1ec
font_01_sfnt_off000058d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58D6 9328 bytes
SHA-256: 9a9c3cf016f1d0f73f2b9bab9f36f10c083ca72aaa9cb5277f9c9253d2dd7142

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