Malicious PDF — malware analysis report

Static analysis result for SHA-256 d388b792c668eb38…

MALICIOUS

PDF

61.5 KB Created: 2020-08-18 15:47:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4662b0b14794af13ca245bc99b70f9fc SHA-1: 79d11deebcfc83a794d13303ef639e54c0f0b2a1 SHA-256: d388b792c668eb3844d80becac03d049643dc979b48e5a8f5dac093232605d0a
194 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link pointing to 'ttraff.com', which is associated with malicious activity. The document body, though partially corrupted, contains text related to 'PMP certification questions and answers 2018' and the malicious URL, suggesting a lure. The file also contains a large number of external PDF links, many hosted on Shopify, indicating a potential SEO link farm used for distribution or traffic redirection.

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=pmp+certification+questions+and+answers+2018 In PDF document text
    • http://files.hebsolutions.org/uploads/1/3/2/6/132683224/1330345.pdfIn PDF document text
    • http://files.badappleorchard.net/uploads/1/3/1/4/131454766/70857d5943e4d.pdfIn PDF document text
    • http://files.sunlifedogs.com/uploads/1/3/1/4/131406434/dasuratakaj.pdfIn PDF document text
    • http://miborimu.homesteadnigerians.com/uploads/1/3/1/4/131437792/e60aef.pdfIn PDF document text
    • http://files.cherylmoskalukart.com/uploads/1/3/1/4/131437593/779ae69e4.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/1/0431/4988/5606/files/wunafomizazezojijos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8153/9489/files/mathematical_modeling_models_analysis_and_applications.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0243/6518/files/befoda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8866/6005/files/zugevikixob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9751/3381/files/81492416585.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5700/5215/files/schistosoma_mansoni_ciclo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3883/3831/files/zonaviwinaxufadenagesijim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6387/8566/files/73520532397.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/9432/2855/files/6835392152.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5564/3809/files/dunalisizunalideginile.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 6

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a537.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA537 6008 bytes
SHA-256: ac1c0d28b0d440eb7e8332ce6d40edc1ccc9e8972dc8be039c8efb500e0cb91f
font_01_sfnt_off0000b992.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB992 2188 bytes
SHA-256: 872018799a247a45f2e1a44524747510961298d7e2597d8a0c61661932ecccc7
font_02_sfnt_off0000c39a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC39A 10832 bytes
SHA-256: 35af020d870c7c52c7fc3afb36dc17a9f75027cb9bed9017d77f2d727e9aded3

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