Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e06a6c5f24d3001…

MALICIOUS

PDF

44.2 KB Created: 2020-10-28 23:14:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: f043bff1c15018ac409a5c08027aab58 SHA-1: c0e6df9a70b9b55102a07c11142d53ebe4146011 SHA-256: 0e06a6c5f24d3001e5b0579a8a431f8dfb270de5472117bf2663f1e587f351f7
194 Risk Score

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://cctraff.ru/aws?keyword=grigori+grabovoi+pdf+knjige In PDF document text
    • https://lotagixowila.weebly.com/uploads/1/3/1/1/131164100/3117058.pdfIn PDF document text
    • https://terowibew.weebly.com/uploads/1/3/4/3/134370771/vizemekivaf.pdfIn PDF document text
    • https://fitijozis.weebly.com/uploads/1/3/4/3/134372299/xefusifonazad-gikibekopenotos-xabadam.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/7989682.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006c8c.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006c8c.bin)
    • https://uploads.strikinglycdn.com/files/f7d2f34d-56e2-453b-af8a-7bb75cf9a155/waginoxotuxipapiluzosubiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/0672/3749/files/pefame.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/5312/5284/files/18094662818.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3922482-3eaf-4390-9997-61dcc5884cd1/tonawanikotule.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c78904af-7c4a-405b-a01f-37d8e4d847ba/40719201413.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/3949/0726/files/vogorikomunafudidob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6057/5912/files/maplestory_crossbowman_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5384/9499/files/wodudegemosubegefisifuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a37e1928-dadc-42f6-81d4-b0d4c6e98034/47442915474.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/4612/0866/files/nokia_arabic_ringtone_meme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2076/2783/files/pepubajukolu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/1129/2314/files/determination_of_heavy_metal_in_water.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4012/6614/files/pigebegu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/9150/0452/files/zufenibagokodopazugo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68e55a7d-f312-4c68-9f76-8f1d7b0654d6/rudefusu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/0931/0359/files/20801273011.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/4894/7871/files/49742574215.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/3826/8318/files/dent_mod_apk_unlimited_money.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 extracted file (font_00_sfnt_off00006c8c.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C8C 5372 bytes
SHA-256: b6858bac61e9369c220dc223c479b051ccedd0fd1d9df71fb00dc391c794e1c0
font_01_sfnt_off00007ef3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EF3 10752 bytes
SHA-256: 7207fe7201f68b6a8b4680a3fad39700ea18e6bb45179dde9e8504e15bf2fd6d