Malicious PDF — malware analysis report

Static analysis result for SHA-256 c77f8bace4897b43…

MALICIOUS

PDF

50.5 KB Created: 2020-08-18 17:46:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4d8cee99882d9538311e2968fefed097 SHA-1: d36f7311ad23fd32bd1a22549c28aa6f8866916d SHA-256: c77f8bace4897b4379c11fb83c8c53ce70ff69424718f271baa58e74f873ca06
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous links, many of which point to a redirector service (ttraff.cc) that is flagged as malicious. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=bloccare+aggiornamenti+applicazioni+android', suggesting a lure related to blocking application updates. The presence of a link farm and a malicious redirector indicates a phishing or malware distribution attempt.

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=bloccare+aggiornamenti+applicazioni+android In PDF document text
    • http://vazunopi.the-beijingguide.com/uploads/1/3/1/4/131482975/tuvipavu.pdfIn PDF document text
    • http://laluk.thetheatretruck.com/uploads/1/3/1/4/131407406/8962186.pdfIn PDF document text
    • http://files.fredfredas.com/uploads/1/3/0/8/130815303/mizizozutovusa.pdfIn PDF document text
    • http://files.northernsmokers.com/uploads/1/3/1/4/131437464/sodom.pdfIn PDF document text
    • http://files.popmovee.com/uploads/1/3/0/7/130775475/ruxezel_subutazeloruxi_boxezifarifo.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/1/0430/3287/1074/files/mental_health_awareness_articles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2866/5752/files/sap_bods_hana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4886/9786/files/lofulam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1239/9010/files/raxorokiduwonedulus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3496/8213/files/befelafexeretavasuwowepo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9721/1551/files/bozetoxipoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/liwisubusamepumiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3723/6119/files/numeros_romanos_del_1_al_10000_completos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7725/4814/files/the_dark_knight_rises_script.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off000072ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72FF 5312 bytes
SHA-256: 846ab11347c1c15e8f964d4916843da8cec3f3543b1e706450f886e89cccf2f7
font_01_sfnt_off000084f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84F4 10444 bytes
SHA-256: b8968553c4f75d1fafc55b09a1fd69500a0e6d548604088e4230ae3f24864da1
font_02_sfnt_off0000a701.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA701 16176 bytes
SHA-256: f2583892ab0769ccb9c49a0d880b5ee8bf4fd705591c6adacee4fdff1d628763

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