Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1b286f16c591f9a…

MALICIOUS

PDF

42.6 KB Created: 2020-08-20 19:05:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5dbccf4dbd2194e9e981b94417033831 SHA-1: a2b4e7e8f90f65d388b3e724b485c0524f4e0fe9 SHA-256: f1b286f16c591f9a2eda40d432af5840eff0691cd05e8efd174393b7d3d7d630
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF file contains a significant number of embedded links, with the primary link identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that the link at 'https://ttraff.ru/pify?keyword=balance+druid+guide+8.+2.+5' points to known malicious infrastructure. Additionally, the 'PDF_SEO_LINK_FARM' heuristic indicates a large number of external PDF links, likely to manipulate search engine results or distribute further malicious content. No scripts were extracted from this sample.

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=balance+druid+guide+8.+2.+5 In PDF document text
    • http://xuborato.facilityaid.com/uploads/1/3/0/7/130776485/6e7e30.pdfIn PDF document text
    • http://sidugefi.thewillowtreegifts.com/uploads/1/3/1/3/131383483/1363872.pdfIn PDF document text
    • http://mutubojos.dublintaiko.com/uploads/1/3/0/7/130776791/modamafukewupel_jorurijosum_nolizajed.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/1/0431/3019/2039/files/70143681561.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1280/0159/files/15805969169.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2122/1539/files/neural_network_backward_propagation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/4612/7004/files/backup_and_restore_app_data_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7692/7141/files/50990843640.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3273/1038/files/21191053099.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5693/8664/files/42045555055.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9372/1255/files/31306601521.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8158/1209/files/57238259297.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8752/7078/files/36454354009.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1538/6789/files/hungry_shark_full_version_apk_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8777/3342/files/beethoven_music_sheet.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68E9 5460 bytes
SHA-256: 720ee3ee60c874b639241eb476066afb3c1c75d2142b083638ca85ce1bb8de89
font_01_sfnt_off00007b7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B7E 9928 bytes
SHA-256: 44bbe26642ba9cb1dab59a9fefb8c911d17285a16512c474347ebd60d80272d6

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