Malicious PDF — malware analysis report

Static analysis result for SHA-256 332842fa510d0672…

MALICIOUS

PDF

43.9 KB Created: 2020-08-12 05:57:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 410fbf96d2b9cd092ab466c502e5cfde SHA-1: 024db7c07ac9436cf3fe49196b8678bdd396ae6e SHA-256: 332842fa510d0672e93c0a3042a49736633e9fc8459aeb4bc8640a2737b33a06
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF document contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body and embedded URLs suggest a lure for downloading IELTS materials, which is a common tactic for phishing or malware distribution. The presence of a visible LOLBin command execution instruction further supports malicious intent, likely for downloading and executing a second-stage payload.

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.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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=makkar+ielts+speaking+jan+to+april+2020+pdf+download+free In PDF document text
    • http://betututa.benedictionworks.com/uploads/1/3/1/3/131381078/1073593.pdfIn PDF document text
    • http://files.cavaliersofroyalty.com/uploads/1/3/0/7/130776619/rirejedisifarox.pdfIn PDF document text
    • http://files.theparishofstaugustine.com/uploads/1/3/2/7/132740352/wufagideweji_jisisozin_sadagub_dajitomod.pdfIn PDF document text
    • http://nezoxapu.innerrhythmsmusic.com/uploads/1/3/1/8/131858540/toxum.pdfIn PDF document text
    • http://files.cvhsaa.org/uploads/1/3/0/8/130874295/nutolimijiwu.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/1/0431/3789/2509/files/46876268015.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7537/1159/files/pdf_converter_to_word_arabic_support.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3480/3352/files/16179450065.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1353/7951/files/five_card_stud_movie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6759/6184/files/dilutotugatiwaxinavasunu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/1973/4938/files/uninstall_powershell_windows_10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6083/9078/files/breakfast_on_pluto_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fuxojusi.pdfIn macro / runtime command snippet
    • https://cdn.shopify.com/s/files/1/0437/6592/3997/files/97059893210.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/1613/1484/files/xonagezegoxetufalokulavev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2763/5096/files/niwijogi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6302/4547/files/55998945743.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9122/1911/files/mulivajojejalijaniwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3431/9776/files/49498400046.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
    • https://cdn.shopify.com/s/files/1/In macro / runtime command snippet
    • 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_off00006db3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB3 5720 bytes
SHA-256: 32c27e33fa3a77a1056d5f85f05183b50914bb9f70a9393be3e3683e175554ce
font_01_sfnt_off0000815e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x815E 9588 bytes
SHA-256: f5e46e5b4bc75b92cbf6ce7b0a9f3459310395e113bc3499a1796dbccf9775f2

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