Malicious PDF — malware analysis report

Static analysis result for SHA-256 279b8404dfe74d75…

MALICIOUS

PDF

57.6 KB Created: 2020-08-02 23:43:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 234564e194bb8c519a839e3eaf4adb28 SHA-1: e0339cd1d534a9f47edcf5d6c714f0c1a9acbafe SHA-256: 279b8404dfe74d751fea0cd01c8ecd26f23079421cee35fc12df2bbd93efa7f8
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a high number of embedded links, characteristic of a link farm, with one critical heuristic identifying a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector found by the heuristic. The presence of a 'download button' lure further supports a malicious intent to trick the user into clicking through to malicious infrastructure.

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.cc/pify?keyword=electrical+engineering+hambley+solutions+manual+pdf In PDF document text
    • http://files.homesweethomemarch.co.uk/uploads/1/3/1/4/131407547/8b7efe5bd1.pdfIn PDF document text
    • http://files.tuhstakeout.com/uploads/1/3/2/3/132303238/4574bc.pdfIn PDF document text
    • http://files.hellohollowprintsland.com/uploads/1/3/0/8/130814466/6ef7bb080.pdfIn PDF document text
    • http://files.novaleeskulls.com/uploads/1/3/1/4/131453574/9265071.pdfIn PDF document text
    • http://files.soulutionscounselling.com/uploads/1/3/1/4/131438019/6d1565b5984f.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/1/0430/6377/1293/files/72166764141.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2135/3635/files/11261987678.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/paxotaxazojulilinitulo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6482/8838/files/79564852575.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9114/0501/files/85073556421.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6145/8582/files/8052263360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6889/1040/files/pixip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2875/0234/files/debuzawopekoxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7194/7423/files/25262645683.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4748/3552/files/gavozitapisavukufamumu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2559/4530/files/bisitipiwivewujigebibun.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_off00009dee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DEE 5768 bytes
SHA-256: ae28c756d43c2a7e84496322c09a3b1759a7da123fa2d7a2871b1925dddf9788
font_01_sfnt_off0000b16a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB16A 11780 bytes
SHA-256: 6be76150d09e3a669446fde411d19ff312aa18515a43190154f303505b03789d

Open this report in the interactive analyzer, or submit your own file for analysis.