Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a5caf6d66a76bce…

MALICIOUS

PDF

55.5 KB Created: 2020-08-06 00:09:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b9cad9ec72cc87ede89525f78060e8ee SHA-1: 8d1267b8c9322910af64c66e8fc499feb70ec7aa SHA-256: 6a5caf6d66a76bceab03926ec4edc1f0a9ee2849eaa71cc82b7c41d84e011b8f
194 Risk Score

Malware Insights

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

This PDF file contains multiple embedded links designed to redirect users to a malicious redirector, specifically 'https://ttraff.cc/pify?keyword=prinsip+titrasi+permanganometri+pdf'. The document appears to be part of an SEO link farm strategy, aiming to trick users into downloading what is presented as a legitimate PDF, but which ultimately leads to potentially harmful content. The ML classifier strongly indicated maliciousness.

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=prinsip+titrasi+permanganometri+pdf In PDF document text
    • http://files.vibramhk100.com/uploads/1/3/1/6/131606206/kagowamowiro_vifawudatigugar_kabaxipubasez.pdfIn PDF document text
    • http://files.funny-jokes-quotes.com/uploads/1/3/1/3/131379296/pigexukus.pdfIn PDF document text
    • http://files.keystonekidsgo.org/uploads/1/3/1/3/131381066/zonijejovamasebo.pdfIn PDF document text
    • http://files.eukariot.com/uploads/1/3/0/7/130739174/367a8aef9333.pdfIn PDF document text
    • http://teramer.assertion-evidence.com/uploads/1/3/0/7/130776483/3fba3a8640e068e.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/1/0427/9202/6271/files/41778993418.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9376/2975/files/ralov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7079/1573/files/satodexolunakaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8497/2183/files/mojatoporonex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4752/6293/files/copleston_history_of_philosophy_volume_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0668/1497/files/nizul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3557/4943/files/39176950694.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7699/1653/files/saint_row_3_cheat_codes_ps3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5598/8387/files/50260013269.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9571/8040/files/musawajofukidusari.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_off000099a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99A2 5332 bytes
SHA-256: afd7c13ba7e85b6e9ab1a6b6f06e1c3bc28dfb9d1f2be6ff30e81da98a8740fb
font_01_sfnt_off0000abae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xABAE 10404 bytes
SHA-256: c5967add7231c14b6989735ab1520f428994515e940b02d1230f2c6db0fbea6e

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