Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae3c7c7640bad0d8…

MALICIOUS

PDF

44.5 KB Created: 2020-08-21 01:25:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f9eb6306b7b707f3d3a3f45d6b07f907 SHA-1: 5024df5c5325c40295621cbf8e1ba15fb85353a0 SHA-256: ae3c7c7640bad0d856ad6740d229d175e988d99b64a9dfad1fd58e04c068fabc
194 Risk Score

Malware Insights

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

The PDF contains embedded links that lead to a redirector service, which is a common technique for distributing malware or phishing pages. The document body, though heavily obfuscated, contains the same lure text and URLs found in the heuristics, suggesting a social engineering attempt to trick the user into clicking the malicious link. The ML classifier strongly supports the malicious nature of this 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.ru/pify?keyword=chocolate+peanut+butter+cheerios+nutrition+information In PDF document text
    • http://mirafut.theimaginariumnh.com/uploads/1/3/0/7/130775795/bazovixu.pdfIn PDF document text
    • http://vadud.fhsguidance.com/uploads/1/3/0/7/130738950/vaparozetomi.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/1/0434/4155/3575/files/84646926592.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6350/1222/files/jabumatanaxona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4098/0643/files/intex_pool_pump_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9807/1449/files/wojato.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7803/2296/files/voguvirevekakatok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0175/6323/files/dupadodeterukelo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8987/9445/files/83997210955.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2894/5819/files/77928001572.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8513/3992/files/tefevabotemasugepipovu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3155/1400/files/capitalization_worksheet_for_grade_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2398/3015/files/tizasepesikuse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3360/5797/files/mind_reader_book_lior_suchard.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4044/0471/files/fesemesesopaza.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_off00006614.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6614 5300 bytes
SHA-256: 6208f081cad373d31c73e2b34cbc602ebd7e1d7501d976d669b04bd243f84328
font_01_sfnt_off000077dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77DD 14280 bytes
SHA-256: 1b472e139fd9e618a8576490dd9274f03d1eac0d0b661c68efce1ba3bdecccaa

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