Malicious PDF — malware analysis report

Static analysis result for SHA-256 b53a05681e61b468…

MALICIOUS

PDF

51.6 KB Created: 2020-08-19 19:52:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b108b24f985e1e7ab6d6db8d97c57e38 SHA-1: 46601eecc06ab3409bc34db91974aed8fb073cf3 SHA-256: b53a05681e61b468e70baf32eecbcb08618668f44784c84ec34080fe6cd92464
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to ttraff.ru, which is also present in the document body. Additionally, a PDF SEO link farm heuristic indicates the presence of numerous external links, many hosted on cdn.shopify.com. The ML classifier strongly supports the malicious verdict. The primary attack pattern involves luring the user through these links, likely to a site that serves further malicious content or downloads.

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=azar+modded+apk+unlimited+gems In PDF document text
    • http://bovaxad.audreylewisinteriors.com/uploads/1/3/1/4/131483492/bojukujogik_noruxepewiloma_mimixozizokobir.pdfIn PDF document text
    • http://salopoz.starseedallianceinternational.com/uploads/1/3/2/7/132712615/bitilugezuv.pdfIn PDF document text
    • http://files.magnoliachapter14oes-pha.com/uploads/1/3/0/8/130813330/sowoxufuzizok-vijivofulas.pdfIn PDF document text
    • http://pizar.midsummersoundcompany.com/uploads/1/3/2/7/132740449/jivalowepowojel.pdfIn PDF document text
    • http://jukuji.wellingtongrillcolorado.com/uploads/1/3/2/7/132740373/9520034.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/1/0433/8673/2707/files/gobodejenavuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/3302/2879/files/jetazagefi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3125/7510/files/soal_dan_jawaban_akuntansi_perusahaan_jasa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3217/2965/files/50300041390.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6782/4533/files/bunefijegetenopafofap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1415/0553/files/basics_of_anesthesia_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5127/6696/files/fuxenezogeremutimenamus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1071/1971/files/xulerisefuwuluva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0877/7637/files/sajapusuvaxedasulokite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6028/2023/files/suxonuleropuraziresew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1065/3338/files/wibaludumejew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7456/7843/files/pexadominodudiwememal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8355/4202/files/98189038668.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A2F 5384 bytes
SHA-256: 49a88307e57008ebdd6e46d585ba5949675c17584073400cca22ac8feb8b5170
font_01_sfnt_off00007c64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C64 1964 bytes
SHA-256: 409ee9a3885541ffdc58d6bd2d6bfd260a46de59e4270c8c7780dd2af6cdbafe
font_02_sfnt_off000085bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85BD 10128 bytes
SHA-256: c1378a1080f0b6e3dc6618fe5591eb56f9af2f88b013c9a06a5cfb7bb2ac104a
font_03_sfnt_off0000a8ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA8AE 17384 bytes
SHA-256: 7fb668a7946ad93d45c8d8c1b3f39f677756563650ad01c19c5231c1499fa852