Malicious PDF — malware analysis report

Static analysis result for SHA-256 493610013e581aa2…

MALICIOUS

PDF

48.5 KB Created: 2020-08-07 06:01:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 33c819cdcdad8a96f958df0837471438 SHA-1: f82bd5989caa53c8e633abe7a898fd4b6a9d9810 SHA-256: 493610013e581aa29ebad1ed78844fad95c45a679c16d43859bc6f05bf1aea27
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 'ttraff.ru'. The document body, though heavily obfuscated, contains references to 'electrical engineering by bl theraja pdf' and the malicious URL, suggesting a lure to a malicious site. The PDF also exhibits a link farm behavior, pointing to numerous external PDFs, likely to manipulate search engine results.

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=electrical+engineering+by+bl+theraja+pdf In PDF document text
    • http://files.womensbalancehealth.com/uploads/1/3/0/7/130739212/1b7e5fa52.pdfIn PDF document text
    • http://files.manishaanantharaman.com/uploads/1/3/1/4/131483154/viniwa.pdfIn PDF document text
    • http://files.lorettovolunteers.org/uploads/1/3/1/3/131379382/3773978.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/1/0435/2330/9727/files/preposition_of_place_worksheets_for_grade_4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4233/3084/files/bipososurinozefeluris.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3173/2125/files/46201270361.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6112/5013/files/22502847547.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7441/1926/files/59637783782.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5425/9606/files/88559478940.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7541/2902/files/sbi_bank_exam_books_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5837/3542/files/lipojimovori.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2452/3170/files/new_holland_parts_lookup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1047/4663/files/denotixabetirebanota.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0300/9430/files/nebumomore.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A3E 5516 bytes
SHA-256: b6b5263157177e8aa75e2c0a1c556376d649c515567ef73ddd8bf4b99be38442
font_01_sfnt_off00007cfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CFC 2116 bytes
SHA-256: 89454d8ece1be00d2333aac76955f46ed17c4d141322e635bf27f42efb43e54e
font_02_sfnt_off000086c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86C8 14960 bytes
SHA-256: 64fb4600d61aa4a7780964105a9a6ba7b58bb7816de98a6a8a7a4822703c022d

Open this report in the interactive analyzer, or submit your own file for analysis.