Malicious PDF — malware analysis report

Static analysis result for SHA-256 a599469cc960e0bc…

MALICIOUS

PDF

96.6 KB Created: 2020-08-21 08:25:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 77756daa06deec6d9c1c148eb9d9fee1 SHA-1: 07af40fc9878895a2bff273bc2b94b3ad154ddd3 SHA-256: a599469cc960e0bc1e0cce93a55778b9a5e9346ca8d2ef53ccdda253065a130a
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text that, combined with the heuristic 'SE_ADVANCE_FEE_SCAM_LURE', strongly suggests an advance-fee scam. The presence of numerous links, including a link farm, further supports the malicious intent of directing users to potentially harmful sites.

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.ru/pify?keyword=just+jumble+answers+672 In PDF document text
    • http://files.loridanenberg.com/uploads/1/3/1/3/131398174/2c4b0a.pdfIn PDF document text
    • http://files.northwayds.com/uploads/1/3/0/7/130739415/a96c0034d49d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6663/0037/files/14304875115.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0268/2789/files/47602249479.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4286/4289/files/pepipujutiladaxujikovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0773/8019/files/jesizimoxatimusi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2868/4701/files/inherited_ira_rmd_calculation_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8892/9187/files/zovotoseginivolagunixus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9660/4825/files/public_private_partnership.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0937/5383/files/fepizalurorag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9961/1553/files/fighter_brute_5e.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/87967576867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5007/3240/files/katy_perry_road_mp3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8880/9889/files/psychological_causes_of_stress.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 1

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_off000131a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131A2 5220 bytes
SHA-256: b3d43640561584b1d8dd1f20bc3cf2a28576fa90bac36796cc5f1b7cb08e22c9
font_01_sfnt_off0001435f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1435F 10412 bytes
SHA-256: 027982ec1e946d287c7ef3d0362959acf0fc88851e67fc6baaa4e9d8f9e9a16a
font_02_sfnt_off000166fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x166FD 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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