Malicious PDF — malware analysis report

Static analysis result for SHA-256 af1422b5425147ee…

MALICIOUS

PDF

50.3 KB Created: 2020-08-08 17:06:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6c6dade624cb6f117dfb02fd19bf96a3 SHA-1: 74ab59bb65926d3d936c9b06d30c782caf555cab SHA-256: af1422b5425147eecfce6ad9725a4a40b17832fead74c648f1019524fa6227dc
202 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a download button, which leads to a link farm of other PDFs hosted on Shopify. The primary malicious link is ttraff.cc, which redirects to a URL containing 'oracle mathematical reasoning pdf' as a keyword. The presence of a link farm suggests an attempt to distribute malicious content or engage in SEO manipulation for malicious purposes.

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.cc/pify?keyword=oracle+mathematical+reasoning+pdf In PDF document text
    • http://files.theoffbeattraveler.com/uploads/1/3/0/7/130775515/lefadejivewipaxibet.pdfIn PDF document text
    • http://files.afterdivorce.net/uploads/1/3/1/6/131637169/6093082.pdfIn PDF document text
    • http://files.saintleoresidencelife.com/uploads/1/3/0/7/130739557/1241896.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/1/0428/9540/9311/files/jokujozarit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6674/4216/files/kanzen_jisatsu_manyuaru_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8982/0836/files/icao_annex_10_vol_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2790/7239/files/9857967809.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9456/5271/files/prescott_microbiology_9th_edition_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2814/3510/files/rizefe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4066/8838/files/89429771826.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4622/4551/files/zepisefaxekum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4714/7928/files/degebudowora.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9028/8535/files/ruwomosutakedirenawisamiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5639/7464/files/85571207616.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0152/0023/files/54486477363.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://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn 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_off00004ebf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4EBF 5596 bytes
SHA-256: 4c65752a5d4511e812fd59bfc77b317aec2639a3515138caed1bf4232e792a6f
font_01_sfnt_off00006191.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6191 10844 bytes
SHA-256: 2c6adfd70b030580772d14cb21161b32df51a2aebea8ad0205065278ad9d9ed4
font_02_sfnt_off00008325.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8325 10176 bytes
SHA-256: e5a3e72211014f1f528a596762267bd8523c8f0966a24141aff8dfab3f119a36
font_03_sfnt_off0000a655.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA655 16204 bytes
SHA-256: 3c260b720ba846d87de456033c05b94d326aa9f09b16dabc19f167f97f6ae321