Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb5d1bdbc0851b4a…

MALICIOUS

PDF

40.3 KB Created: 2020-08-18 14:46:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c2dfd89c7af95f868306002318f29c0a SHA-1: 693f24a89d7b19b69ea9d1fa0f89bfb5c72ce0fd SHA-256: eb5d1bdbc0851b4af5cfb11340660dddf078dd5bf86b28bd614565b8896945df
202 Risk Score

Malware Insights

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

The PDF file contains a mass external link farm, with many links pointing to Shopify domains, likely for SEO manipulation. One critical heuristic identified a link to a known malicious redirector, ttraff.ru, which is presented with a lure related to 'blockman go hack mod apk'. This suggests the document's primary purpose is to redirect users to malicious infrastructure, potentially for further exploitation or malware delivery. No scripts were extracted, limiting the analysis of direct payload execution.

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=blockman+go+hack+mod+apk In PDF document text
    • http://files.rusticocuisinetx.com/uploads/1/3/1/6/131606206/vixekiwano.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/1/0436/1447/0302/files/warhammer_40k_8th_edition_download_vk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4944/1687/files/five_characteristics_of_an_entrepreneur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/0707/8564/files/cardiopatia_congenita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0593/4757/files/max_hp_5e.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6513/0658/files/80131385857.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0513/2445/files/descendants_3_soundtrack_mega.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5698/8311/files/vegamizezigiwukerade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rixaraxamixenapo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3675/3570/files/mipebanisiwibewegomazol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2802/9345/files/jojoxebovuvutaweg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/5694/3524/files/guitarist_guide_to_effects_pedals.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5982/2243/files/sudofadal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9307/1774/files/93354514805.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5127/0815/files/bosnian_war_summary.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60BB 5324 bytes
SHA-256: 0c127ba0b2cedc9a3bb5dce5c400f3f21e333ebc52c31720b0a6a4d40555015e
font_01_sfnt_off000072a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72A8 9948 bytes
SHA-256: 520e2d2df59ddc094f6329788cde4b8cc74a1587b04fa3e507c643e85a7e10fa