Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ea41202b55a38b8…

MALICIOUS

PDF

33.0 KB Created: 2020-08-16 16:03:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4b2dc4cab87a5d8a093297b15b69f5ac SHA-1: 015ff26d32cfde750fda6f9faa32986b4a168d7e SHA-256: 4ea41202b55a38b81ac9b6aaf93b7d5edfd221284159d9da760ad1cc119cfb86
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=kaththi+bgm+ringtones'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains references to the malicious URL and benign-looking PDF filenames, suggesting a lure to external content. No scripts were extracted from this sample.

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=kaththi+bgm+ringtones In PDF document text
    • http://files.annakramerwriter.com/uploads/1/3/1/4/131410685/8804239.pdfIn PDF document text
    • http://files.daddybabygirl.com/uploads/1/3/0/7/130738639/vawur.pdfIn PDF document text
    • http://zajiwovo.loewkebrill.com/uploads/1/3/0/7/130739593/juzamopemus.pdfIn PDF document text
    • http://paduraz.saritzahernandez.com/uploads/1/3/0/8/130874123/gotuxufaripuxi.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/1/0432/9170/5500/files/renudajudotoguzerunopame.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5653/6479/files/7881477390.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1219/4463/files/8400692025.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2588/9442/files/pimot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6690/1148/files/68057593173.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/83260340608.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/3493/1363/files/french_arabic_dictionary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4263/4917/files/35061104839.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4788/6743/files/12775338645.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4610/9341/files/fodobepemafe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8416/9894/files/2_4_4_engineering_lettering_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9595/5358/files/xolinisi.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000044c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44C7 5176 bytes
SHA-256: f75e378b2d8e334373bdd844b6290f5f6ffd0f43545621da0a3be14ea3929bc7
font_01_sfnt_off0000563d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x563D 9616 bytes
SHA-256: f373c904887c11c7a8a68361469c9cdbbf213d0d8262a7b5881e985748917de2

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