Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a5969c3f432dc0a…

MALICIOUS

PDF

40.4 KB Created: 2020-08-12 02:50:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9e78ecee96afb119b8940c47f8683671 SHA-1: 5b33d29361fd453ea169680e60487abc002df4dc SHA-256: 8a5969c3f432dc0a5cf28178aa0fb443dd6901f8fee3c29327e3d6025cd78f67
194 Risk Score

Malware Insights

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

The PDF contains a link farm with a primary malicious redirector at ttraff.com. The document body, though garbled, suggests a lure related to 'printed notes pdf'. The embedded links, including the malicious one, are likely intended to direct the user to malicious content or further stages of an attack. 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.com/pify?keyword=vaid+sir+anthropology+printed+notes+pdf In PDF document text
    • http://mafojeni.portfolio-people.com/uploads/1/3/2/8/132814930/xelugiw.pdfIn PDF document text
    • http://files.followthrumarketing.ca/uploads/1/3/1/4/131437859/fadife_zoxalonokuziz_wigoredu_derodewes.pdfIn PDF document text
    • http://files.a-mfoundation.com/uploads/1/3/1/1/131163902/lokoju_zofenitikipulu_gosuxejeki_damulewaj.pdfIn PDF document text
    • http://files.saltysidewalks.com/uploads/1/3/0/9/130969926/3647818.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/1/0436/0667/1517/files/fevimekunapexodozov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7169/2188/files/space_engineers_airlock.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6730/2295/files/27545314862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8765/0211/files/john_deere_7000_planter_population_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1312/8867/files/15745907147.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1543/0559/files/23093822928.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0144/6554/files/46280621397.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3471/9909/files/mepowonesupibuma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/3032/7975/files/importancia_de_los_agentes_economicos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0962/2691/files/patutaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2562/9347/files/centrifugation_experiment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6513/0660/files/92327422931.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_off000049ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49AE 5372 bytes
SHA-256: 12e3452e85ebb75ebeeff9dfba56418afdb2fe39384e57fd7e0dffe6e3e53d1c
font_01_sfnt_off00005bf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BF6 10248 bytes
SHA-256: d35babbf0e89d90ab98eb1b5c6654450a7d1e9ed764218c1955b11a46fc2c176
font_02_sfnt_off00007f2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F2B 16164 bytes
SHA-256: 6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3