Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a1c42200327ef53…

MALICIOUS

PDF

44.6 KB Created: 2020-08-19 04:04:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2a73ed99d683cbaeaa18625df5adfa2f SHA-1: 826b18efdb34debdef9ec7b5d7ca0c3707b1837a SHA-256: 3a1c42200327ef53ec2aed7e999b26184407fb54bf02ac86774488d76a83c2b4
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=android+10+samsung+mexico'. Another critical heuristic indicates a PDF link farm, suggesting a broad distribution attempt. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains fragments of the malicious URL, reinforcing the redirection attempt.

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=android+10+samsung+mexico In PDF document text
    • http://dagowe.themindfulchristian.com/uploads/1/3/1/4/131437594/wexofulagiver.pdfIn PDF document text
    • http://xuniso.mcclellandcollegemusic.com/uploads/1/3/0/9/130969060/sejarutimudezasijon.pdfIn PDF document text
    • http://files.lifeoflongearion.com/uploads/1/3/0/8/130813906/8184812.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/1/0446/0825/8211/files/al_quran_dan_sains.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7567/4024/files/53369158372.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9699/8041/files/36180602132.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6043/5871/files/fairy_meadows_tour_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6350/1222/files/66302908331.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3778/6265/files/say_your_name_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9033/7182/files/8774043847.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4645/2899/files/chiang_mai_attraction_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8180/1629/files/comparing_doubles_java.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7217/6796/files/55516341311.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4451/1645/files/gefurifasidozo.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 3

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_off00006990.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6990 5480 bytes
SHA-256: 0dfdeb423573b7aac9d6b1e4fa1307da9cc12a62e96db30157ed0a4c637c32b2
font_01_sfnt_off00007c1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C1D 13224 bytes
SHA-256: c18efad430d7ca6030e601d670f581fe5218321c6cc86a61fd0be71229b2f287

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