Malicious PDF — malware analysis report

Static analysis result for SHA-256 48187a1a2eed4b1f…

MALICIOUS

PDF

39.6 KB Created: 2020-08-28 09:53:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ad20e3de685b1923fad255b608584584 SHA-1: 99aa0bb130ffd58e8c60a22565c1380ae590ac1b SHA-256: 48187a1a2eed4b1fdcd4e347168f60c85112b7296bd56727f0940fad1ebd4c58
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=genetics+notes+pdf+download', disguised as a download for genetics notes. This link is intended to lead the user to further malicious content. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many of which point to Shopify domains, likely to improve search engine ranking for malicious content. No scripts were extracted from this sample.

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=genetics+notes+pdf+download In PDF document text
    • http://zatisexat.lovelaughterandreallife.com/uploads/1/3/0/7/130776131/9920680.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8974/0441/files/factoring_polynomials_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7148/0742/files/nikasusitofogujujeganuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7941/7504/files/rixanotarewej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9151/5808/files/pokemon_fire_red_151_hack_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1848/5923/files/neverwinter_leadership_profession_le.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4130/8320/files/66434903074.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4240/4512/files/33561641141.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4132/5207/files/jufizejigitosogikevuvuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5595/5619/files/fefixaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0384/4520/files/multiply_and_divide_by_3_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5556/2402/files/69618692405.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45598155969.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4638/8380/files/92994690135.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005060.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5060 4964 bytes
SHA-256: d59e21c3b345b3d966d7d941342263723f9c47789bc7b0897bdd30e846ea3ecc
font_01_sfnt_off0000616d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x616D 10072 bytes
SHA-256: 990525177e8da0ec7b0916b3829e142a282a1281a31d04d7fbb8b86f94d8dca7
font_02_sfnt_off000083bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83BB 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e