Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5272884778d6feb…

MALICIOUS

PDF

49.8 KB Created: 2020-08-14 22:14:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 481a8c5a46ec2a6d4bf47cb0f1ea3414 SHA-1: da8c3aac4ce6ee89ad19b58cebc4580e260c838f SHA-256: f5272884778d6feb228719d2e5cd6f9bc1e19eaf72379ee9df04f907cf1f1ef3
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to a known malicious redirector, ttraff.com, disguised as a Bangla book PDF. It also contains a mass external PDF link farm, with many links pointing to shopify.com, likely for SEO poisoning or to obscure the malicious redirector. The embedded URLs suggest a phishing or redirection scheme to deliver further payloads.

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.com/pify?keyword=bangla+book+pdf+islamic In PDF document text
    • http://wojigas.correctyourconcrete.com/uploads/1/3/1/8/131856772/nevumiti-gojumiwovizuke-fexuwinasilo.pdfIn PDF document text
    • http://dufane.columsands.com/uploads/1/3/1/1/131163992/aa57e41b1a7ab.pdfIn PDF document text
    • http://files.hinghamspeechtherapy.com/uploads/1/3/0/9/130969080/jetetevo-bikagefexiludet-nugineti-guzuguwoto.pdfIn PDF document text
    • http://files.normanconquest1066.org/uploads/1/3/0/7/130776821/buwuv_xodoxadix_rigajefu_dekesovulede.pdfIn PDF document text
    • http://files.lilarose.org/uploads/1/3/1/3/131380480/pupogudetanowa_lewaz.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/1/0430/5630/0186/files/no_love_august_alsina_mp3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9824/2214/files/alan_walker_faded_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7315/8806/files/fedutorizanawurise.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7944/8216/files/bowling_alone_essay.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6488/3355/files/zopatewevuket.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0229/8521/files/wudapisaxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3208/3612/files/bloodborne_wooden_shield.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/20423190183.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5564/3809/files/psychological_perspectives_in_education.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7228/0981/files/dilixakijobexusowomux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5950/3519/files/juzixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2180/1371/files/nami_aram_build.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006352.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6352 5632 bytes
SHA-256: bc2e7779bd004c71a91ed933181983633ae855785caef502241f1211b3914951
font_01_sfnt_off00007668.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7668 10296 bytes
SHA-256: e874d4abc9b0ae348e13fe4fed4b8cd7f8fed67b01d5946250d370920ac7ee9e
font_02_sfnt_off000097a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97A5 9948 bytes
SHA-256: f1903d09e425ec6a4173fe85d5138b146a61c90f476257d95ed9df8b6d714151