Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc46c1d0a49885d3…

MALICIOUS

PDF

588.8 KB Created: 2020-08-12 21:44:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6220d5d0444225e218fc00c82c46d0f7 SHA-1: 78e0ea47283a457cd010db0b5f044444ba7ae19a SHA-256: bc46c1d0a49885d3be699006c2e242fd5d8396ab10e11d74f4d96b8f7d534bc2
134 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating a malicious redirector link. The embedded URL, 'https://ttraff.ru/pify?keyword=aerospace+manufacturing+processes+pradip+k.+saha+pdf', is directly linked to this malicious activity. The document body, though heavily obfuscated, appears to contain the same URL, reinforcing the lure. No scripts were extracted, limiting further analysis of the payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9558

Heuristics 4

  • 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.
  • 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=aerospace+manufacturing+processes+pradip+k.+saha+pdf In PDF document text
    • http://sogab.farmercityumc.org/uploads/1/3/1/1/131163635/tibowutiz.pdfIn PDF document text
    • http://wudebu.jillkerttula.com/uploads/1/3/0/7/130739459/losifisuw.pdfIn PDF document text
    • http://files.gulfbreezeschoolofmusic.com/uploads/1/3/0/7/130776826/a55b02dc894ea9e.pdfIn PDF document text
    • http://files.farcornersmusicals.org/uploads/1/3/2/6/132681342/4262702.pdfIn PDF document text
    • http://files.pianissimoensemble.com/uploads/1/3/1/8/131871433/1899659.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/1/0427/7737/8972/files/zofisuwizinupurexisat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8288/2980/files/veruvolejuxosulazukuga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5433/3093/files/canine_dental_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9088/6299/files/1394287239.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0326/3650/files/physical_chemistry_9th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5865/8469/files/xedonezapo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3365/7507/files/57017483398.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1791/9912/files/71082264324.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8143/1195/files/46035316487.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8854/2872/files/70540104320.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5905/9605/files/free_photoshop_trial.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0008ba61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BA61 5624 bytes
SHA-256: bc49a479a34b8f750a96f84a76d593a7b33f05e203d403e5031c6d9aa1aeb92d
font_01_sfnt_off0008cd54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CD54 2472 bytes
SHA-256: d304b07fda154ba5c01c8085f9d40e7153789f472d3e061d0246e04baeeb0231
font_02_sfnt_off0008d792.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D792 16860 bytes
SHA-256: 83e519dd7a47c24a74e0d84a7663c716b66e7414380d0c054916e73e5a689211
font_03_sfnt_off00090c4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90C4D 16160 bytes
SHA-256: 8673cfec7487bdecd527dba541a94796c6884566affd58989ab5d3dcd9393336