Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6ac7e6cc0382d4a…

MALICIOUS

PDF

46.7 KB Created: 2020-08-08 14:22:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 99d830283a048efc5215d4d48a94b373 SHA-1: 68f9725623f15976df5ee407b4bf54b5cf6c55a8 SHA-256: d6ac7e6cc0382d4af37286116b3a8a971eccbf869f09eee4a72618de013bf66b
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.com/pify?keyword=barcarolle+duet+pdf'. This indicates the document is designed to redirect users to malicious sites, likely for phishing or to download further malware. The ML classifier strongly supports the malicious verdict.

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.com/pify?keyword=barcarolle+duet+pdf In PDF document text
    • http://files.gopremio.com/uploads/1/3/2/6/132682076/eac43d74.pdfIn PDF document text
    • http://files.burdickequine.com/uploads/1/3/0/7/130738738/gopabidixed.pdfIn PDF document text
    • http://redanogu.juliehortonphoto.com/uploads/1/3/2/7/132710797/3aa0df9174.pdfIn PDF document text
    • http://files.travelar76.nl/uploads/1/3/0/8/130814121/fepixumol_rodagedowi.pdfIn PDF document text
    • http://files.bbfcafe.shop/uploads/1/3/2/7/132740270/1151702.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/1/0429/2821/0073/files/xirujugeboduded.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1327/5811/files/kujopapurisufexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3630/2750/files/44531743949.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7426/4996/files/12744501841.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6377/9240/files/9321575663.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2874/1272/files/petabukubikipur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/6219719719.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1548/8163/files/jazijudovojalowulisigabuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9141/7495/files/movies_in_saginaw_mi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9572/8029/files/er_ir_preterite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3173/2132/files/41704503918.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_off000079f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79F3 5020 bytes
SHA-256: 57d6500b160991dd0d682c6de95dcfd7620eef0cd1b7b3c4e82a5dedfc33aedf
font_01_sfnt_off00008b17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B17 10120 bytes
SHA-256: d39e85072868f8f1691758ead3f24aed804ab1b7aa9642312e7f3c961c22f6a4

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