Malicious PDF — malware analysis report

Static analysis result for SHA-256 868c70752bf443f6…

MALICIOUS

PDF

47.5 KB Created: 2020-08-10 15:28:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 228f5888a2852e21c205c5082a1e1a10 SHA-1: ebfe44ed7f48f96ca1e971142b1c15c5fdc40e62 SHA-256: 868c70752bf443f622869b4940ee21ffddf43b09ba74defae529879cb84771c4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to redirectors and SEO spam infrastructure. The ML classifier strongly indicated maliciousness. The primary malicious URL identified is https://ttraff.ru/pify?keyword=pae+esquizofrenia+paranoide+pdf, which is used in a redirector link. The document body itself is heavily obfuscated and contains the malicious URL.

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=pae+esquizofrenia+paranoide+pdf In PDF document text
    • http://nifekar.afterorthorevenue.com/uploads/1/3/1/4/131438641/189d3f.pdfIn PDF document text
    • http://files.spiritadfundraising.com/uploads/1/3/0/7/130740053/tumalale.pdfIn PDF document text
    • http://files.nationalwealthcenterclub.com/uploads/1/3/1/3/131383760/fanibigakupaxo_zetasunev.pdfIn PDF document text
    • http://files.silvercreekcomn.com/uploads/1/3/1/3/131383727/gapitibure-dajasedu-tokosejod.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/1/0438/9945/3608/files/20055418305.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1883/0492/files/79541008169.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0873/6928/files/ralezumewisofibaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4931/2666/files/foruwud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7503/5541/files/python_restart_script.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5016/3609/files/drake_legend_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/7106/5503/files/immune_mediated_hemolytic_anemia_in_dogs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7094/6456/files/85156813294.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8549/6482/files/72476248639.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8923/1000/files/luwivotamixabuwuju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3592/6434/files/zotutiwufajixowaxexado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7463/4403/files/90862592862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7971/9330/files/coarse_aggregate_in_concrete.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 5

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_off00007b56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B56 5180 bytes
SHA-256: d2a2b4428a656a5bdb057a4b6ec6a36184cd1db2311395c16dd6643083880cfe
font_01_sfnt_off00008d05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D05 10492 bytes
SHA-256: 561937d7ea7c1594e90a7eaed256d0f95eb3a3338850807e9f9bae3f16c21586

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