Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0c8be8d8f601bb1…

MALICIOUS

PDF

46.5 KB Created: 2020-08-28 08:41:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3421b00a4022458835d6bacfd97e3d13 SHA-1: f8ec01abceaada767fda566b02b951df44389bf0 SHA-256: b0c8be8d8f601bb1df32232d129186d3b41f134d9abb760b2b35b1a6c6998be6
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=kpss+matematik+yaprak+testleri'. Additionally, it exhibits a PDF link farm behavior, with numerous embedded links, many pointing to Shopify domains. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the same malicious URL and a benign-looking link to a Shopify PDF, suggesting a lure to educational content that redirects to malicious infrastructure.

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=kpss+matematik+yaprak+testleri In PDF document text
    • http://files.singaporedrumshop.com/uploads/1/3/1/3/131379059/822b94cca95421.pdfIn PDF document text
    • http://sasufo.helpurchild.net/uploads/1/3/1/6/131606271/gufoxufu_romugiv_tizitazejodup_fokoxaso.pdfIn PDF document text
    • http://files.myguttellsme.com/uploads/1/3/2/7/132710786/cb0b21d4e1ff.pdfIn PDF document text
    • http://siwow.redlandseniorcenter.org/uploads/1/3/1/6/131606490/rijawogev.pdfIn PDF document text
    • http://files.nowandzenyogawc.com/uploads/1/3/0/8/130814076/40e522d13fb68a.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/1/0433/0687/7080/files/61238086127.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2030/3006/files/70115542811.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7020/1760/files/38778778391.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5136/0164/files/59127292371.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1848/5923/files/xaxakavewemoneditixex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0209/9872/files/battle_bros_tower_defense_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1149/6347/files/chaap_tilak_full_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4351/8629/files/free_translation_to_word.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5235/8049/files/grind_on_me_lyrics.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 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_off00006cd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD3 5100 bytes
SHA-256: 6b2483e80d01de3f17f0e6c05ec553b33b1f5dd5345206e5cdeed1839f453123
font_01_sfnt_off00007e1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E1C 15456 bytes
SHA-256: 16e3c73b3701201347bff2b6905aa7838c93b163501edb54e415d854319d718b

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