Malicious PDF — malware analysis report

Static analysis result for SHA-256 503eb5edfd533243…

MALICIOUS

PDF

43.4 KB Created: 2020-08-24 04:01:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: af0447da79e812334d3f4c1859396a08 SHA-1: 1c17079a4b73a7e7f4b90483c31d10b575a74ff8 SHA-256: 503eb5edfd53324396796554ddabd9fccb60f7e4677efbbcccd3921813f3e44e
202 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which points to a known malicious redirector. Heuristics indicate a lure for advance-fee scams and fake payment requests. The document body, though heavily obfuscated, contains text related to payment requests and includes the malicious URL. The presence of numerous external PDF links suggests a link farm used for SEO poisoning or traffic redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=stop+payment+request+letter+format In PDF document text
    • http://files.michaeltmeier.com/uploads/1/3/1/8/131856392/778293.pdfIn PDF document text
    • http://files.blackgirlscode.com/uploads/1/3/0/8/130873787/zesus_gojaxofofiwel_ditug.pdfIn PDF document text
    • http://files.raesandwaves.com/uploads/1/3/1/4/131411197/63aee290.pdfIn PDF document text
    • http://kevogaj.wageandhourcalc.com/uploads/1/3/0/8/130873851/e991066.pdfIn PDF document text
    • http://nuxefab.davidagordon.us/uploads/1/3/0/8/130874575/zodaxexepepunuz_wejividutojeki.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/1/0428/4504/4892/files/outside_sales_resume_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5978/9472/files/absceso_cerebral_neurocirugia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3110/9538/files/kexutumesuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8568/5153/files/zepupinokuwaro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5249/1159/files/xugakibunepowedotamodomir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1142/3902/files/65059185397.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3915/2536/files/action_theme_music_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3169/1421/files/ruwokunife.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6694/9799/files/83485500960.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6791/5936/files/kinododokosiweduzefap.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B71 5376 bytes
SHA-256: 45c3e112b9b091ee99320ec697192e8227d17e8fa1dbe339df593d9929a31bca
font_01_sfnt_off00007da8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DA8 10188 bytes
SHA-256: f4d3c27802ae6991d12259c27598d958fd0ef18893b94253f5e79ebedc5ad026

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