Malicious PDF — malware analysis report

Static analysis result for SHA-256 76791ede3edf77a2…

MALICIOUS

PDF

44.0 KB Created: 2020-07-31 13:44:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a6ada38224d5695e825e576835540daf SHA-1: 31160f8596fdfd831dcc5e5341fa2a4e18bab3c9 SHA-256: 76791ede3edf77a2dad1773f58d74c43cec6268cbca1751a87ea3133b0d07794
194 Risk Score

Malware Insights

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

This PDF file contains numerous links to external PDF files hosted on various domains, many of which appear to be part of an SEO link farm. The primary redirector URL, https://ttraff.cc/pify?keyword=corso+italiano+a1+pdf, is flagged as malicious and likely leads to a phishing or malware distribution site. 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.cc/pify?keyword=corso+italiano+a1+pdf In PDF document text
    • http://files.ucmagnolia.com/uploads/1/3/0/8/130813694/porejafipel-jeludisanunosik-junukinuxuk-zefav.pdfIn PDF document text
    • http://files.j2terrarium.com/uploads/1/3/0/7/130775471/bijotabobeso_sopadaz_zabadekefulizo.pdfIn PDF document text
    • http://files.johnsonhoopbuildings.com/uploads/1/3/0/8/130814205/9245474.pdfIn PDF document text
    • http://files.empachernorthamerica.com/uploads/1/3/2/6/132681560/1543305.pdfIn PDF document text
    • http://files.limitlessptny.com/uploads/1/3/0/7/130775565/mipasuzo-kuzalumo.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/1/0431/0705/7825/files/80385597013.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6681/7702/files/jijifafitufunaninuwovavuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0803/2922/files/34321316008.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4976/3494/files/pokusik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5946/8701/files/8023292967.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8094/9658/files/podixedabilixekowolujo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1596/9688/files/78013029153.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8672/5799/files/wiriwamalakis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1542/1600/files/45220972707.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/romiket.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4713/2068/files/nuxisorov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1931/3053/files/lugutadubajonilesuloxuzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7468/0987/files/55855700219.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3908/8027/files/31022254264.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_off00006e6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E6D 4780 bytes
SHA-256: 67ddd1387cf448e893cc176d2ba50552c69109d7ce8c1305f6f70df2e7d5c3ad
font_01_sfnt_off00007eb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EB3 10932 bytes
SHA-256: decd8037193e100ec21bfd030d85ffeba36423f872eb2ac5e8bc2db2644c6ca8

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