Malicious PDF — malware analysis report

Static analysis result for SHA-256 5352b9a85c8ab1ff…

MALICIOUS

PDF

32.6 KB Created: 2020-08-21 13:48:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 59f4b3b7f76ac12b380fd6c3a8798312 SHA-1: f33f7dd616877ad5b34ec3547f24fc578e4badc0 SHA-256: 5352b9a85c8ab1ff3472562a9c39b04844142bf06496545bb56b6fbf1107bd58
194 Risk Score

Malware Insights

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

The PDF file contains numerous links, including one to a known malicious redirector at 'https://ttraff.ru/pify?keyword=basketball+game+free++for+pc'. The document body, though heavily obfuscated, also contains this URL and text suggesting a lure for a 'Basketball game free for pc'. This indicates a phishing attempt to redirect users to malicious infrastructure.

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=basketball+game+free++for+pc In PDF document text
    • http://files.adbacademy.com/uploads/1/3/2/3/132303322/0fd9f35f0a90cb.pdfIn PDF document text
    • http://xowozota.completewellnesscenter.net/uploads/1/3/1/8/131856257/6b0a81b545d0.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/1/0447/6433/2181/files/knife_party_give_it_up.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8758/3650/files/27495536469.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7880/2846/files/48629018139.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9094/3902/files/motivazioni_sentenza_appello_bossetti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9403/2040/files/92264329108.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6709/5705/files/buwizelute.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8812/4830/files/firestone_weathergrip_review_consumer_reports.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0521/3847/files/6712495207.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000412b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x412B 5588 bytes
SHA-256: 7f7fb90da2ed8459b4786516ab8c8099f13c017d0322535b37e59e7751434eb9
font_01_sfnt_off0000541d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x541D 9972 bytes
SHA-256: ce95a71da472938ebf2d8a1eb1cb7093d614508b543a2ef0c6e5f984359d59df