Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dcc1f70f0299d2b…

MALICIOUS

PDF

41.1 KB Created: 2020-08-18 23:05:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 61828cab0032eb9c329590a23297e426 SHA-1: 6b992ef3ef64598842ca77a70b70fe5378f4283e SHA-256: 6dcc1f70f0299d2be17085344f819f165cecd9f227c58cec521d2d9624428db6
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious URL, identified as a redirector for phishing or malware distribution. The document body, though heavily obfuscated, contains text suggesting it is an annual report, used as a lure. The ML classifier strongly indicated maliciousness, and multiple heuristics fired related to malicious redirectors and link farms.

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=gammon+construction+annual+report+2017 In PDF document text
    • http://sexow.azzarodogs.com/uploads/1/3/0/8/130813509/5829907.pdfIn PDF document text
    • http://files.beautydetangled.com/uploads/1/3/2/3/132303147/xivugi.pdfIn PDF document text
    • http://jisafi.imaginerespiteservices.com/uploads/1/3/2/3/132303382/favuwujumewi_buzorusube.pdfIn PDF document text
    • http://files.crudeoilcalendars.com/uploads/1/3/0/7/130739883/5245763.pdfIn PDF document text
    • http://tikoz.icgtouring.com/uploads/1/3/1/3/131383839/8920522.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/1/0434/6108/3301/files/84227853663.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1560/2339/files/99291065898.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5419/4070/files/aditya_hrudayam_telugu_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9452/3552/files/fonipugorepepefo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1942/6197/files/john_deere_2240.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5791/3754/files/rasamej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8099/9321/files/digital_dash_drake_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7994/9718/files/puzakivusovadug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4277/4935/files/ascendance_trilogy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/44989969237.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9707/1524/files/29146642284.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7677/1224/files/isometric_paper_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9411/4457/files/vupojibut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0588/5090/files/jezogizibuximolaz.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 7

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_off0000615f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x615F 5516 bytes
SHA-256: ced37378734e660153c3570b842d1355651203bb5d0a208335771e3042ff63ae
font_01_sfnt_off00007412.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7412 10304 bytes
SHA-256: d314bce5f22c2840ce9534b21ee69f741abdf84f0296678eef2f7a44a1a26eaa

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