Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bab0a546c37ff6c…

MALICIOUS

PDF

37.8 KB Created: 2020-08-06 12:16:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7056551f4486c64b12125f15c5b308a3 SHA-1: 302d241ceea06c1c25c93d1ff4e43221e15b8b7c SHA-256: 6bab0a546c37ff6c63c47701808cb4f85da6a620d8c74ceb556d42dbddfa4faf
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service identified as malicious. The document body, though heavily obfuscated, contains text related to 'file to pdf merger' and the malicious redirector URL, suggesting a phishing or malware distribution lure. The presence of many links to external PDFs, including benign ones, indicates a link farm strategy to potentially obscure the malicious redirector.

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=file+to+pdf+merger In PDF document text
    • http://files.marthomawashington.com/uploads/1/3/1/6/131607110/2651807.pdfIn PDF document text
    • http://files.debhenry.online/uploads/1/3/2/7/132712206/5542071.pdfIn PDF document text
    • http://files.stjohnhamilton.org/uploads/1/3/0/8/130874026/2043563e03dd6b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7926/2623/files/connect_four_java_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4842/6920/files/noxejopulunadutegaka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4650/9461/files/eureka_easy_clean_71b.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3556/5978/files/ap_stylebook_2017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1263/6322/files/bridgeport_milling_machine_for_sale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6196/0091/files/komotividituratopetewow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9744/6816/files/78055212016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8451/3440/files/banunapuviderezukusixozon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1367/5928/files/58703975770.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1424/0931/files/what_is_memory_leak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2355/7030/files/vewuniwi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B36 4612 bytes
SHA-256: ec79149255700f2b7f3f1a89feb274774668d6b1bd13c93932c8c8adc446809e
font_01_sfnt_off00005ae2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AE2 9820 bytes
SHA-256: bcd3fc5bd0174d32ea858eefe76d53743e921517b806425f580107b9b5edd014
font_02_sfnt_off00007c7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C7E 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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