Malicious PDF — malware analysis report

Static analysis result for SHA-256 77e545a2924d56c3…

MALICIOUS

PDF

42.7 KB Created: 2020-08-23 02:06:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0de70ae5731a1cc74576a9bc9cac9b05 SHA-1: 5e6db71d5b423cf2d5bac05f4663e6fa4f56de35 SHA-256: 77e545a2924d56c3c8667b58f574898bde5d4fea5a6fde6313203be772e49b52
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector URL. The document body, though heavily obfuscated, contains the string 'Investigative reporters and editors 2018' and the malicious URL, suggesting a lure to a phishing or scam page. The presence of numerous PDF links also indicates a link farm strategy, likely to obscure the malicious destination.

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=investigative+reporters+and+editors+2018 In PDF document text
    • http://files.coastnuflow.com.au/uploads/1/3/1/6/131636990/doxotulifuvaloxadumi.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/1/0454/5786/6902/files/kigotuzidalat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4294/4677/files/windows_7_recovery_disk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2859/4336/files/sofumuxeve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8977/9106/files/kendo_grid_row_template_color.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7417/5644/files/l298_datasheet_st.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9200/9365/files/xasixonukefavopawubuwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8987/9445/files/71292981891.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/1842/3194/files/administrao_financeira_lawrence_gitman.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7896/7703/files/12410828855.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fadanamimurusekebunom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/3109/3397/files/black_lightning_season_1_episode_6.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7565/6094/files/guided_meditation_music_for_sleep.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_off000066f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66F3 5612 bytes
SHA-256: 6960375e3d7909d72f3f6b076951f85d1c9b6428a73a9edb64df42223b95495b
font_01_sfnt_off00007a1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A1E 10736 bytes
SHA-256: db64ec8737be870a902e4dd5a7cb6fd9c1da8cd32a5de6de9f036cfcf58d5e1a

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