Malicious PDF — malware analysis report

Static analysis result for SHA-256 2775bc8ced1613b1…

MALICIOUS

PDF

42.4 KB Created: 2020-08-23 03:19:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ea9e6942173e567db26f1891bce46c23 SHA-1: cf37a3658d63d0f153de0a02fd6266a76db15b6e SHA-256: 2775bc8ced1613b166e645c1225c64d2e1a74be1adb9fb56db879b219ae75cbc
202 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be a lure for downloading content related to 'street fighter 5 android requirements'. The presence of a download button heuristic further supports the lure. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=street+fighter+5+android+requirements In PDF document text
    • http://lepeporo.urbanedenbeauty.co.uk/uploads/1/3/1/4/131413418/5711969.pdfIn PDF document text
    • http://files.pilatescouture.net/uploads/1/3/2/3/132303373/1030305.pdfIn PDF document text
    • http://files.alioleary.com/uploads/1/3/1/4/131409761/3391351.pdfIn PDF document text
    • http://files.theroamingresearcher.com/uploads/1/3/0/9/130969489/a68d216307a1.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/1/0433/6179/6248/files/tukowewaxitagob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4932/0610/files/tnt_on_fios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6010/9210/files/python_count_items_in_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3803/1518/files/43290280539.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/45292738862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6219/7400/files/17551620815.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7016/7967/files/pokemon_silver_gameshark_codes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6897/1418/files/rabbit_anesthesia.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_off000062f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62F4 5644 bytes
SHA-256: a6da5c62790819bba10bce218db8142a177001b7e3c02ccbc6d8d3c6e18cf3d4
font_01_sfnt_off000075e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75E8 11016 bytes
SHA-256: 18c16b07e3891de2b6c3485fa89bd0443ba61fdc57c6545164b9ae4368b4e48a

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