Malicious PDF — malware analysis report

Static analysis result for SHA-256 01a168c8338fd942…

MALICIOUS

PDF

31.5 KB Created: 2020-08-23 05:42:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5b978f9749a22332115a3fb8454b2659 SHA-1: f1e2e70bef263c945fe6a8556def6d59727f7a18 SHA-256: 01a168c8338fd942b8f588fa1a7b3677b8336ee571b44ed8445ac88fb6dd61b7
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple heuristics indicating malicious intent, including links to a known redirector and a large number of external PDF links, suggesting a link farm for SEO manipulation. The ML classifier strongly flagged this PDF as malicious. The embedded URLs and the presence of a download button lure indicate an attempt to trick the user into downloading a payload, likely disguised as a 'blend collage app'.

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=blend+collage+app++for+pc In PDF document text
    • http://jidefuf.heart2heartknittingfiberarts.com/uploads/1/3/1/0/131069934/xoxajal.pdfIn PDF document text
    • http://files.narragansettgunclub.com/uploads/1/3/0/8/130815009/4292611.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/1/0440/2718/3269/files/lalasininogewopelebilin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8570/8953/files/gedotawifomaxalox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7832/7203/files/fowiwugon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5366/1851/files/68531830490.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4555/2290/files/5915462016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3612/8933/files/37354691585.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2390/8520/files/30412489906.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7298/8071/files/54717158759.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8201/5129/files/movefamulujemos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4320/9895/files/aluminium_sheet_thickness_chart_mm.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003f5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3F5F 5196 bytes
SHA-256: 85b9d934c9f08544a7517af14cb8299a08b6969d2c3e2e55ae90f53b7c090299
font_01_sfnt_off00005113.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5113 9516 bytes
SHA-256: b6699df66d7d4e27172f81afcb6d59738fb717f9e482503b566572873ff7716e

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