Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bb302f22f4b76fc…

MALICIOUS

PDF

45.1 KB Created: 2020-08-12 07:47:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8f7d415dc8fd2fb1348b2916f3e699d1 SHA-1: 480c6b314551228ba4ede15cdf9aa11d6a617121 SHA-256: 2bb302f22f4b76fcdefb380f05c303c5425c1b4e81a0cc643cc5a3d49b806640
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, likely for SEO manipulation. One prominent link, however, redirects to a known malicious infrastructure at ttraff.ru. The document body, though heavily obfuscated, also contains this malicious URL, suggesting the primary intent is to redirect the user to a malicious site. No scripts were extracted from this sample.

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=commutative+property+of+multiplication+worksheets+3rd+grade+pdf In PDF document text
    • http://wuzis.michael-corey.com/uploads/1/3/1/4/131407089/b56a06908e2e0.pdfIn PDF document text
    • http://files.brokenwcowboygear.com/uploads/1/3/1/3/131384401/4922141.pdfIn PDF document text
    • http://files.surreyhillsmusicfestival.com/uploads/1/3/1/4/131437839/betolizam_diken_sowidixaxi_vasufepubedutux.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/1/0431/7364/2406/files/essentials_of_statistics_triola.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xoxolesusoziviro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9024/6822/files/beowulf_burton_raffel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3976/9254/files/14299172083.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4945/9605/files/precalculus_math_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4160/4263/files/34448639927.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4871/3896/files/30918340146.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3797/4950/files/57314271212.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4581/3414/files/vugawusili.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8032/7070/files/puxowabubomi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2845/4298/files/48304515052.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5347/2151/files/anatomia_de_los_alveolos_pulmonares.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0942/6079/files/nodojuvavuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4101/3415/files/nudunamarasobozulufux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4655/1208/files/pususodakukexokunob.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_off00005b4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B4C 5956 bytes
SHA-256: ff3f953b212b7a960c6a17d3ddaa139e7bcc1a423e751ae50c83e5f7b1fb663e
font_01_sfnt_off00006f85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F85 9900 bytes
SHA-256: afdba38e6385797a715d1c2586d74a4e8188555f93305e5fe028345597f060ff
font_02_sfnt_off00009191.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9191 16116 bytes
SHA-256: edc33fe94617b35fa5734827a91efdc9665031ac3a5a8b8018a6396f4204b3d2