Malicious PDF — malware analysis report

Static analysis result for SHA-256 7db70fa573b6d152…

MALICIOUS

PDF

65.9 KB Created: 2020-08-19 08:05:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 269bf6201efbeaee4dc6d91a3cc4d2b6 SHA-1: 2e47db86a7e6d3250ae7093e05065547b9ab9c0c SHA-256: 7db70fa573b6d152f005e1bd4d2cd6e04ca25188e6aefbd4b6f2d3270eb27311
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to external resources, many of which are part of a link farm designed to improve search engine rankings. One prominent URL, https://ttraff.cc/pify?keyword=chromeleon+7+user+manual+pdf, is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting it's a primary lure. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it's used for malicious redirection.

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=chromeleon+7+user+manual+pdf In PDF document text
    • http://nemomovab.annadoeshair.com/uploads/1/3/1/4/131482933/vuguxi-dobaluxurog-sagokekavipi-papoti.pdfIn PDF document text
    • http://files.featherlegsoutdoors.com/uploads/1/3/1/4/131454549/vevazozovozu.pdfIn PDF document text
    • http://luvuriba.ajameskolar.com/uploads/1/3/2/7/132740873/kusotiwexaguxifalazu.pdfIn PDF document text
    • http://namegeju.forgemd.com/uploads/1/3/0/7/130776394/wokipebowis.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/1/0430/9667/0365/files/gawawaworukelasiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9657/8979/files/xeroraxanefu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7279/0427/files/20119574527.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5287/6455/files/70963194489.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5086/8646/files/nofixigekadijusedow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3735/1326/files/english_movies_free_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/62042090741.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4642/8059/files/9930512005.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2018/0894/files/vipotijomagudurebebalar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5515/3303/files/41594782601.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8843/5613/files/15426670339.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6241/1935/files/roxevarunifewali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0883/5234/files/skripsi_kualitatif_akuntansi_perpajakan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0698/3335/files/wufulokebuwebosazabe.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bd73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD73 5264 bytes
SHA-256: 62dfc0f202d4319d66e16ab7e96188f8b9d94c33d01cf51cfed5e492dfd83750
font_01_sfnt_off0000cf30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF30 12736 bytes
SHA-256: 4ff7718caf26e680a812bd12a000462596c27544bbf61d9e2a8fc109fdcbf012