Malicious PDF — malware analysis report

Static analysis result for SHA-256 75ffaf145a02109e…

MALICIOUS

PDF

54.2 KB Created: 2020-08-17 05:52:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8e79db71fbf137ffe8cacde514541519 SHA-1: 77d63acd34f9cf63ac80468634a71486b1dcfe67 SHA-256: 75ffaf145a02109ec5d34987aaab0dfcc123cc1e5dce2dcf481e9e33ad573170
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, ttraff.com, which is also used in an SEO-based lure for free downloads. The document body, though heavily obfuscated, contains the URL and text related to interview feedback, suggesting a phishing or malware distribution attempt. The ML classifier strongly supports the malicious nature of this PDF.

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=negative+feedback+after+interview+template In PDF document text
    • http://files.wolfegranite.com/uploads/1/3/0/7/130775432/487561.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/1/0433/8050/6773/files/zibodatuboziperogifep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1322/6139/files/78144415721.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0536/9758/files/nozenedenuwakubafoxisu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8841/2836/files/box_and_whisker_plot_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5357/2515/files/65567372398.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5252/3929/files/wofiwewedevurelawedowi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7205/9547/files/bmtc_bus_pass_form_2018-_19.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/24973340919.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2205/6600/files/17684850173.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9513/8208/files/perranporth_surf_report.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

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007088.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7088 5620 bytes
SHA-256: b5b6c03525c309148b4176559fda2996a71258115ef607a8c0772d32e0212f59
font_01_sfnt_off000083a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83A8 3492 bytes
SHA-256: 864daf3033731e10e2f50a3f4d739a69d3941301969a19f16c7157930cc32cc3
font_02_sfnt_off0000917f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x917F 10432 bytes
SHA-256: 40577b7667cf6b581e33aae28f89510c58a908f4243a8ef53373b5c32b210ec3
font_03_sfnt_off0000b55b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB55B 16240 bytes
SHA-256: 1cbb36bb7b1d233ee9f5c2cce214d5b3269f5c1575f9f3c623519b72eb7db796

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