Malicious PDF — malware analysis report

Static analysis result for SHA-256 6db8c17e36e3b646…

MALICIOUS

PDF

45.2 KB Created: 2020-07-31 21:59:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 765f5f42621352c8ef4296f71e165430 SHA-1: bc7b59cf1730ffa57f849718242a42a209c71672 SHA-256: 6db8c17e36e3b646468f2d1fd953a90147c97d14f39f0ab539679db2ac2b06eb
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external resources, many of which are hosted on Shopify and appear to be part of a link farm designed to obscure malicious activity. The primary redirector URL, https://ttraff.ru/pify?keyword=comfort+sentry+thermostat+manual, is flagged as malicious. This suggests a phishing or scam attempt where users are lured by seemingly legitimate content to a malicious site.

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=comfort+sentry+thermostat+manual In PDF document text
    • http://files.candlesinthedarkness.com/uploads/1/3/0/7/130775025/gonavaviridovepevige.pdfIn PDF document text
    • http://files.apaturabeads.com/uploads/1/3/1/4/131410747/bebizujubinas-lizelavo.pdfIn PDF document text
    • http://files.girlsstem.ca/uploads/1/3/2/7/132740362/6956714.pdfIn PDF document text
    • http://files.jazzymaths.com/uploads/1/3/1/3/131382497/a23d68.pdfIn PDF document text
    • http://files.stephaniepercydoula.com/uploads/1/3/0/7/130775635/1474063.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2518/6466/files/belorovowemulodulobebuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9983/1966/files/15814432415.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7912/2587/files/39752047211.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/64008844844.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0373/9294/files/77823598996.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5824/2470/files/xizeselela.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9350/8771/files/94636810993.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0323/1908/files/kejeresemebexuwirovajaxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7426/3963/files/63093568811.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0084/7781/files/wekutopibonaduxadowovikag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0242/9593/files/39234598441.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5355/5610/files/96124483074.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006571.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6571 4968 bytes
SHA-256: 371c202bafd8dc4da6c66b62c342b7a73324f41be2cedd13395a7bb5e2e630fc
font_01_sfnt_off0000762d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x762D 10384 bytes
SHA-256: 40d39f1c799c34a619e658a0aca2a2e421d34ed533a8dc60767978e870ebf94e
font_02_sfnt_off0000998c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x998C 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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