Malicious PDF — malware analysis report

Static analysis result for SHA-256 9254ede27d33d2ec…

MALICIOUS

PDF

43.2 KB Created: 2020-08-23 01:57:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b91c2c3d549575ab24cdb10b54a804aa SHA-1: 11301d666c8ac7f1fb43a1b92191023823c99b50 SHA-256: 9254ede27d33d2ecebb935858b9ad8de69fc815b000a8bfaa9a44f6fc779cdd7
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify, and one critical link redirects to a known malicious domain. The document body, though heavily obfuscated, contains text related to 'Aptoide apk descargar gta san andreas' and the malicious redirector URL, indicating a lure to a potentially harmful download. The ML classifier also strongly flagged this PDF as malicious.

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.com/pify?keyword=aptoide+apk+descargar+gta+san+andreas In PDF document text
    • http://files.lofasothebosso.com/uploads/1/3/1/3/131398125/jusezidoxo_nozise.pdfIn PDF document text
    • http://files.haverain.com/uploads/1/3/0/9/130969695/kikemugobakup-zorojora.pdfIn PDF document text
    • http://files.divotees.co.uk/uploads/1/3/1/4/131438847/turerasuzopedob.pdfIn PDF document text
    • http://files.tcounseling.com/uploads/1/3/0/9/130969372/tovebetasinamaperav.pdfIn PDF document text
    • http://files.stjohnstuckahoe.com/uploads/1/3/1/8/131871705/waxaxoviku.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3722/1276/files/87983271536.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3461/4688/files/rikoxozejorak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9005/1221/files/8174927909.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1239/6968/files/nesafafomibixo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1779/7785/files/xofinubobexojawotilivejal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7599/3764/files/65458426399.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0776/9750/files/baxusi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0068/2906/files/the_outsider_albert_camus_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8549/6482/files/7439445966.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3521/3467/files/23154045140.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F08 5052 bytes
SHA-256: 875a1729fff1b9cb8b67fe688115b5e487ba1db51cb0582e130b61f14fd4e21b
font_01_sfnt_off0000703c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x703C 9868 bytes
SHA-256: c57eddd5ac041a83146a611069a79f472441eba25926fa4a4f5cf044a8edb703
font_02_sfnt_off000091ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91EA 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71