Malicious PDF — malware analysis report

Static analysis result for SHA-256 83e2e5e08b81809f…

MALICIOUS

PDF

50.4 KB Created: 2020-08-14 13:35:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 12a2af8bc93ccbe6a371c9c0b5580db6 SHA-1: 39ef5fe1e893153c15d3be5abbb5d2b13ca46f94 SHA-256: 83e2e5e08b81809f513f09b913cc50699845ed2ea32547b8b232d0dc0a02603f
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains numerous embedded links, many of which point to a redirector service (ttraff.ru) that is flagged as malicious. The document body, though heavily obfuscated, contains URLs that appear to be part of a link farm designed to attract search engine traffic, likely for phishing purposes. The presence of a "download button" heuristic further supports the conclusion that this document is designed to trick users into downloading a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=bcdedit.+exe+for+xp In PDF document text
    • http://gunuk.womens4miler.org/uploads/1/3/0/8/130815017/xetikozaji.pdfIn PDF document text
    • http://files.villatesoristjohn.com/uploads/1/3/0/7/130775834/9f58c0a1cd79.pdfIn PDF document text
    • http://files.lafermemn.com/uploads/1/3/1/3/131380345/5835066.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/1/0437/8843/5613/files/56237610644.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7001/4111/files/32792199635.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3198/5309/files/12645308849.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/86477918810.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/14131217498.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4230/8250/files/41968479007.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2538/3073/files/84406673323.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1712/6556/files/git_branch_name.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7327/4018/files/bitegepofalekukija.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8918/3398/files/52534073631.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5608/6696/files/82635003424.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7135/4533/files/cancionero_musica_catolica_acordes.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F9A 4876 bytes
SHA-256: 099c1db47766fcc8fab3aaa62fb7808bcd966a5072b903a92267c6fc162768c6
font_01_sfnt_off0000804b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x804B 11380 bytes
SHA-256: c62c3ae3a4efa78b1c1d4027c21051c807b4b73cc248f84bdf5136c356dd986e
font_02_sfnt_off0000a6c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6C4 16484 bytes
SHA-256: 4a41d7e182d54c13fd0401492552211af2609381ae6f503edd12761a0a0b0f88