Malicious PDF — malware analysis report

Static analysis result for SHA-256 d58e4ab832c750ce…

MALICIOUS

PDF

42.6 KB Created: 2020-08-22 16:59:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: aa0ab551b6986538e46af8e4068972f6 SHA-1: 99a7f9fe2c48debdaf9d3f02343aa5ce0a34c29d SHA-256: d58e4ab832c750ce9e9698336d3b4a04afb180071326901dfe906d393c8a6e57
202 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.cc/pify?keyword=quik+video+editor+apk+mod'. Another critical heuristic indicates a PDF link farm, suggesting an attempt to manipulate search engine results or distribute content. The presence of a 'download button' heuristic further supports a lure-based attack. The document body, though heavily obfuscated, contains a reference to 'Quik video editor apk mod', aligning with the lure. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=quik+video+editor+apk+mod In PDF document text
    • http://latodug.caleotravel.com/uploads/1/3/1/8/131856669/fbf42e.pdfIn PDF document text
    • http://doduva.sailonsounds.com/uploads/1/3/0/8/130874674/ab47a950e25.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/1/0437/1247/9382/files/lozijonulakukimeredemu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0369/6536/files/farcebook_template_google_docs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8785/4749/files/94925470997.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3569/5016/files/lujenos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5512/8477/files/fatonowipub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/6276/6242/files/80877950403.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1687/0298/files/aptoide_apk_indir_android_oyun_club.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3009/2696/files/mibarewasavajafubivik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1026/9082/files/favati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3929/3589/files/crucial_memory_scan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9881/6150/files/rujijerejafikulusabowa.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000608e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x608E 5080 bytes
SHA-256: 1642c611608df7c49eed8a2257fd4fc4e2726967902cfab21f6791e20f51f3e8
font_01_sfnt_off000071b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71B7 1800 bytes
SHA-256: daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e
font_02_sfnt_off00007a45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A45 10344 bytes
SHA-256: 90e1e3f5007788f62731b54771f106d4700cf0993bd2302df355c465747c435c

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