Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b3024eb2ff60f4c…

MALICIOUS

PDF

40.3 KB Created: 2020-08-25 05:13:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fcb7d5afb32a5041b61f7767702ba1e5 SHA-1: 77b285d61d52f91c4feffe00c1613b94f07e2757 SHA-256: 4b3024eb2ff60f4cd6a1ccc5dcdd1f9cec8f425db18bc6b96650994fcb572fff
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify domains and one critical link to a known malicious redirector at ttraff.ru. The document body, though heavily obfuscated, contains the URL https://ttraff.ru/pify?keyword=honeywell+thermostat+guide+pdf, suggesting a lure to disguise malicious redirection. The ML classifier also strongly indicated maliciousness.

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=honeywell+thermostat+guide+pdf In PDF document text
    • http://files.thecherigroves.com/uploads/1/3/1/3/131398156/0c09cff1c7.pdfIn PDF document text
    • http://files.alebml.com/uploads/1/3/0/7/130739239/3594939.pdfIn PDF document text
    • http://files.brisbaneblonde.com/uploads/1/3/0/7/130776110/fopurugos_vopuwofujevipad_lokenanefi_zakesemi.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/lugapib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1941/9291/files/mivojadere.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4390/3905/files/73492797187.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8915/8554/files/60995664881.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3741/7891/files/nuferara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5893/8531/files/comment_arrter_de_boire_de_l_alcool.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8340/6239/files/kabbalah_magic_in_urdu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7500/9698/files/jafumot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2914/2426/files/31762043617.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1626/3592/files/xarazeb.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_off00005dd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DD2 5612 bytes
SHA-256: 8a35de0198c6491679967afa5edb57c707273b29ea792e30d68c4a8ac937ee03
font_01_sfnt_off000070cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70CF 10524 bytes
SHA-256: 8fc21eb98373271a0f04fc5c5ef1ff97fcc90797ecb11258acdb968119be837f

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