Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f7dc8b87cd7805d…

MALICIOUS

PDF

43.4 KB Created: 2020-08-24 20:03:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 26b881b33f64d92adbe1d99546907f15 SHA-1: cc32441931cecfed181b98917144f8ed123207b6 SHA-256: 1f7dc8b87cd7805d85d0fc21fdeebba85d48f2721d2d975023d22184f0049823
194 Risk Score

Malware Insights

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

This PDF document contains a significant number of embedded links, forming a link farm. The primary malicious link, https://ttraff.ru/pify?keyword=apprendre+l%2527+allemand+simplement+pdf, is identified as a malicious redirector. The document's structure and the presence of numerous external links suggest an attempt to lure users to potentially harmful websites, likely for phishing or malware delivery. The ML classifier strongly supports the malicious nature of this PDF.

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=apprendre+l%2527+allemand+simplement+pdf In PDF document text
    • http://files.drtvetcare.com/uploads/1/3/0/8/130874110/finuxijafal.pdfIn PDF document text
    • http://files.leiaryan.net/uploads/1/3/0/7/130738620/4136771.pdfIn PDF document text
    • http://files.virtualchip.com/uploads/1/3/0/7/130775677/7471301.pdfIn PDF document text
    • https://www.allemandfacile.comIn 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/1/0429/2762/0249/files/rte_gujarat_application_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4173/4311/files/dubivomamamebutini.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0118/3384/files/79199738241.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2358/9788/files/genizo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5872/5018/files/aplikasi_antrian_paspor_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1789/5068/files/pekovuxixevurix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8907/5099/files/3149327397.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9361/2949/files/fewoteginoranape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7272/4885/files/8380099335.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1778/1927/files/santa_monica_dream_lyrics.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_off000068ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68ED 5208 bytes
SHA-256: 1d36306fadbea50339674c9fb21276ef7e53ec60ef02fc4c53902afa924e3239
font_01_sfnt_off00007a8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A8A 12184 bytes
SHA-256: 7a1b124d1c9f602a0f1b8c51c876360459250d65c6c59891ce9f0ab70329a871

Open this report in the interactive analyzer, or submit your own file for analysis.