Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcdc2c03bcc5a173…

MALICIOUS

PDF

39.5 KB Created: 2020-08-23 01:18:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f1ff80369fbe3c609ed70e7a2f2f8717 SHA-1: fabb25844072168fd040128d94261eb6c14a23e7 SHA-256: bcdc2c03bcc5a1735f56096f2f7b2ed7a1d1b237a6890740bbcb4713dbd57fd5
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm heuristic, with numerous links pointing to Shopify-hosted PDFs, suggesting an attempt to manipulate search engine results or distribute content. The ML classifier also strongly flagged this PDF as malicious. The embedded URL 'https://ttraff.com/pify?keyword=christmas+letter+template+word+microsoft' is the primary IOC, likely serving as a lure or initial stage for a phishing attack.

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=christmas+letter+template+word+microsoft In PDF document text
    • http://files.innovativearts.com/uploads/1/3/0/7/130775021/demuzebesanef-jepip.pdfIn PDF document text
    • http://files.usstheodoreechandlerlettersfromasailor.com/uploads/1/3/0/7/130739558/213096.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/1/0454/0645/3928/files/performance_appraisal_objectives_ppt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1059/6765/files/fokuvobanoganogotorefuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4855/1068/files/kelso_mo_topix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7665/7051/files/58507745574.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4200/4375/files/rent_tax_invoice_template_australia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7866/4867/files/best_app_to_backup_photos_on_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8303/8874/files/bitimupu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4153/7696/files/26516478442.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7990/1096/files/guitar_chords_by_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9721/1551/files/vayu_cyclone_weather_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6888/3098/files/the_historical_figure_of_jesus_ep_sanders.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 5

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_off00005d0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D0E 5392 bytes
SHA-256: 8b9a11a6e7ac599a4634ec91bfa91bf8e7f8a9aee0187a7081ed90ebfc7e9096
font_01_sfnt_off00006f50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F50 10036 bytes
SHA-256: 4069a92fcb85926674890a5253fc7474443d0e442d870a8388155ced2f7da1b0

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