Malicious PDF — malware analysis report

Static analysis result for SHA-256 8518a36f6601bd73…

MALICIOUS

PDF

47.3 KB Created: 2020-08-20 14:13:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3ce1560fb64ed7bf295dca626a0edce0 SHA-1: 58cfac5cc2bf48baae9f3f9966c9c82528d1b0c2 SHA-256: 8518a36f6601bd73320152130a4b253206cf54b38ff6e09115ca2b8729822c68
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links designed to appear as legitimate downloads, but they redirect to malicious infrastructure. Specifically, the link https://ttraff.ru/pify?keyword=wajah+bandung+tempo+doeloe+pdf is identified as a malicious redirector. This pattern suggests a phishing or scam attempt, likely using SEO tactics to attract victims.

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=wajah+bandung+tempo+doeloe+pdf In PDF document text
    • http://zenakiv.vrm365.com/uploads/1/3/1/4/131406082/1987772.pdfIn PDF document text
    • http://files.oklahomaliteracy.org/uploads/1/3/1/6/131606758/294c42da0.pdfIn PDF document text
    • http://pofadiva.jwhitneyart.com/uploads/1/3/0/7/130775565/2726583.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/1/0439/3297/5272/files/11646643389.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4488/6936/files/chemistry_lab_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4826/4089/files/veronica_mars_book_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6762/1028/files/tapiwibopovoviwuxowodu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7012/8277/files/88414959649.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9818/6652/files/koguzivepo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/libutufisolefod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5440/7580/files/redok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4513/5260/files/linek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7853/2774/files/caste_list_in_ap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7727/1703/files/zabakazuvegaliboburajil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5147/5351/files/message_in_a_bottle_book_download.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 8

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_off00007a24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A24 5412 bytes
SHA-256: eb4f88ff934f9d781ae122d6df96303d4b9cd6c8cd0695ea334049297a9070ca
font_01_sfnt_off00008c79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C79 10480 bytes
SHA-256: 6d54bd5769999249c941c1ea3fa25e747f8da24aa51b602450a82f89b7279c8e

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