Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcd9eac1c6d30652…

MALICIOUS

PDF

39.5 KB Created: 2020-08-25 01:24:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5e6e83035b4f804d4c0f7abe8dfa4b8f SHA-1: d8cfef177dd4e2d8cfbb44586f239573ce68c366 SHA-256: bcd9eac1c6d30652880dd0d4692ededdd3b5a2065293948b5fd5a53e8b7bbe12
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=android+apps+not+installed+after+reboot', is designed to redirect users to potentially harmful content. The file also exhibits characteristics of a link farm, with numerous external PDF links, suggesting an attempt to manipulate search engine results or distribute further malicious content. The primary attack pattern involves social engineering through a deceptive document title to encourage link clicks.

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=android+apps+not+installed+after+reboot In PDF document text
    • http://files.ccevenice.com/uploads/1/3/1/0/131070291/ccf226.pdfIn PDF document text
    • http://sador.cjbmaed.com/uploads/1/3/0/7/130739777/pixamokizek_kogaxakogili_vomadebedi_durudenenejegav.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/1/0432/7748/4196/files/avast_registration_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/4008/8740/files/khandeshi_video_song_2018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0641/9367/files/lm741_datasheet_gain_bandwidth_product.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1849/2824/files/44302770499.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7072/3998/files/designing_your_life_book_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/4582/6210/files/luzikiwegijeropifuse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1841/2451/files/digital_image_processing_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8987/9445/files/bokefubunomafajip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/9108/3670/files/85847839468.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0691/0876/files/categorical_imperative_ethics.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 2

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_off00005b94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B94 5164 bytes
SHA-256: 5846580b322c934c3e893d32f367c628010c71f1882d6584cb0a0782f661ce03
font_01_sfnt_off00006d28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D28 10580 bytes
SHA-256: c9f205e0469b08d6f626add2862e5bf551b500d5e2d82c202e98694bbe13bd96

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