Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f3719d0cb4a1191…

MALICIOUS

PDF

41.1 KB Created: 2020-08-04 06:11:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c7d82d219fc53aa0f92369878a1cf8a0 SHA-1: 34eb9baee50679db720cf306d8ffd0d04d02597b SHA-256: 3f3719d0cb4a1191b9eed09dd4b9fd0d67fc78e128cb4a223bbfb2ff9bcd3759
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one URL pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the target URL and appears to be a lure related to 'Blender 2.79 shortcut keys'. The ML classifier strongly indicates maliciousness. The primary attack vector is likely a phishing attempt via a malicious link embedded within the PDF.

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.cc/pify?keyword=blender+2.+79+shortcut+keys+pdf In PDF document text
    • http://files.saraindus.com/uploads/1/3/1/0/131071157/nugukomevewug.pdfIn PDF document text
    • http://files.apeacefulfarewell.com/uploads/1/3/0/8/130874676/9202712.pdfIn PDF document text
    • http://files.powsfsu.org/uploads/1/3/2/6/132696335/7256474.pdfIn PDF document text
    • http://files.lizremphreyshowhorses.com/uploads/1/3/1/4/131453904/tabutip.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/1/0432/5716/8027/files/wesejepig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3173/3159/files/algebra_questions_for_ssc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4686/0957/files/mom_son_3d_sex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5905/9615/files/45669977214.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gifowugebivagobawogun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7449/4369/files/the_duchess_of_malfi_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6309/6984/files/vonaxolutijuwepabowawapol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5679/9647/files/rowufimixazewodejajosa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1093/1358/files/teluxelilitilabovove.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/84860081798.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1137/5267/files/99707422238.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6180/4197/files/7639929461.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8549/6482/files/70276512975.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_off00005ff8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF8 5648 bytes
SHA-256: 416b0aaeac1a277ea7e2bec630c1cd5e8a352f66215d68f2dab7abdb61f13d02
font_01_sfnt_off00007346.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7346 10704 bytes
SHA-256: fb610a1510d2f05659a13b56c6d65783605a966c1a8ec659e3dbfb679fc82a15

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