Malicious PDF — malware analysis report

Static analysis result for SHA-256 99e0bc3e4f34db39…

MALICIOUS

PDF

44.7 KB Created: 2020-08-15 05:30:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e16a5472a3c58cabb1c1fb873b38131c SHA-1: 315e5342f4a1d0cf34c966427e6cad5972edad8a SHA-256: 99e0bc3e4f34db39402895658034b1a486ae9a0a51709ae043e71563b74a3377
194 Risk Score

Malware Insights

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

The PDF contains a link to a redirector service, which is a common lure for phishing and malware delivery. The ML classifier strongly indicates maliciousness. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=game+basketball+mod+apk', suggesting a lure for a game mod download that leads 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.cc/pify?keyword=game+basketball+mod+apk In PDF document text
    • http://files.accruemineralsinc.com/uploads/1/3/2/8/132814119/5875004.pdfIn PDF document text
    • http://files.carolinefconway.com/uploads/1/3/1/3/131398286/ribuvumimi_nizur.pdfIn PDF document text
    • http://nupivoxu.stgeorgesgatepa.com/uploads/1/3/2/8/132814476/xegurodixigoz_jiludinus.pdfIn PDF document text
    • http://files.ladolcevitadairygoats.com/uploads/1/3/1/4/131437444/batifezibi-fosesimipik-kofamadojor-vafevovuta.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/1/0428/0070/9791/files/69505224710.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0227/3703/files/37020293335.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6497/4742/files/gladiatus_expedition_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9295/9642/files/80558796699.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0582/1599/files/18974079766.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8553/7175/files/abbyy_transformer_mac_os.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2824/0794/files/celebrate_it_occasions_place_cards_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3407/5558/files/guitar_chords_english_songs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3164/1762/files/padawofur.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_off0000723f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x723F 5244 bytes
SHA-256: ab6a398bbf3c8743df4cfdddcea19f54218e2375b5525e8dbea5c938fb8709da
font_01_sfnt_off00008405.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8405 9892 bytes
SHA-256: 674d5fcbaab4fde2cf639961d95b25ce6d31cd979ade55b7448d3f256380fc39

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