Malicious PDF — malware analysis report

Static analysis result for SHA-256 9444c1f2fb20173c…

MALICIOUS

PDF

56.8 KB Created: 2020-08-18 20:45:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 26b5015fe7743e787de5339b011f9284 SHA-1: ae2b26ca8d0dfcd6b76b064f9faeb5ff501b53ba SHA-256: 9444c1f2fb20173c215490ea6d92c8a09842d00756b067d1685bb43d3ca0b055
194 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.com, which is likely intended to lead the user to a phishing or malware distribution site. The document body, though heavily obfuscated, contains the URL and a keyword related to medical conditions, suggesting a lure. The presence of a PDF link farm further indicates malicious intent to distribute content or traffic.

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=cervical+thecal+sac+deformity In PDF document text
    • http://files.hindidox.com/uploads/1/3/1/0/131070911/7667a.pdfIn PDF document text
    • http://files.egyptiangift179.com/uploads/1/3/0/8/130874110/kirevu_potakapa_wokozogo.pdfIn PDF document text
    • http://files.dhi-nc.com/uploads/1/3/2/7/132712306/c2ba1c74fb2d.pdfIn PDF document text
    • http://files.inclusionatwork.net/uploads/1/3/1/4/131453170/8145296.pdfIn PDF document text
    • http://files.essentialsforseniors.com/uploads/1/3/1/0/131070481/zosetebibixu.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/1/0431/0099/5741/files/ruximosekopipepitunudowot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5249/1159/files/pujufifajexokizexuvekaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9375/2997/files/62533123243.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1052/2277/files/51674177559.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4652/6361/files/24166498221.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1028/3931/files/11754692687.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2651/4077/files/vazozonitimojetax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3672/8744/files/76104955521.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9763/7535/files/femaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4628/1120/files/que_es_el_radicalismo_raul_alfonsin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1533/1227/files/dukijazi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/40133843423.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009ff9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FF9 5328 bytes
SHA-256: 12424f0875e5b414f9d3249468170c2b5ed0d83f5d2262dac8679f57edd5686c
font_01_sfnt_off0000b1f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1F0 10496 bytes
SHA-256: a31ec5eb01c1d3b4024331084f61a0bb628d1de7d566681f3ca12a89bbb63c45

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