Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b8f9fd2184cfc6a…

MALICIOUS

PDF

42.4 KB Created: 2020-08-10 00:07:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 99ee83d52a37315fe7b66d0e347956bf SHA-1: 10568f2d53e84ef1898fda0427bb0e98264bbf6c SHA-256: 8b8f9fd2184cfc6a242b8b7183e18a02096376e04dc8a294791dca7330319a2a
210 Risk Score

Malware Insights

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

The PDF document contains text and embedded links that mimic a lure for 'Android secret codes pdf file download'. It utilizes a malicious redirector URL (https://ttraff.cc/pify?keyword=android+secret+codes+pdf+file+download) which is a critical finding. The document also hosts a large number of external PDF links, many pointing to benign Shopify domains, but the primary malicious link is the critical indicator. The presence of a 'download button' lure and invoice language further supports a social engineering attack pattern. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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+secret+codes+pdf+file+download In PDF document text
    • http://mumogewo.nonails.net/uploads/1/3/1/4/131411896/81b1c3f57.pdfIn PDF document text
    • http://files.northeastwisconsinwelding.com/uploads/1/3/2/7/132710690/kuteweposozax-gesetu-gizafojerup-lizexamakatazu.pdfIn PDF document text
    • http://files.stedspsychology.co.uk/uploads/1/3/1/4/131453036/aa8bee0.pdfIn PDF document text
    • http://files.0702stonestore.com/uploads/1/3/1/4/131454255/wisuzafikali-sukelexudarok-sodosag-bowipede.pdfIn PDF document text
    • http://desejan.hollistermath.com/uploads/1/3/1/6/131636725/pupowajefekat-wumaxuzekix.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/1/0428/9835/8432/files/13139855908.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5419/4085/files/jesumolinewaja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6421/4175/files/free_birthday_card_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8557/5832/files/pujobemavopisuwuduziw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1264/3227/files/antecedentes_de_la_administracion_de_compensaciones.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3853/8904/files/adobe_master_collection_cs6_torrent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7272/4897/files/telegikeve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0890/9734/files/pozatuterosaxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2118/9788/files/55106133089.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3417/3859/files/writing_for_scholarly_publication_huff.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5272/0543/files/modern_digital_electronics_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5080/3095/files/cooks_essentials_pressure_cooker_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7292/9435/files/zagifezi.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_off0000691d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x691D 5228 bytes
SHA-256: 7c014879d591af2f625090e2f2a26f61c7c849b5a5304e51289629848b09bb99
font_01_sfnt_off00007b0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B0F 9832 bytes
SHA-256: 4ea942886dbdc4aeeb2acaa48110e4b7d97ba362a8e925d110466e994c7ddf2f

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