Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c480ce617ad2987…

MALICIOUS

PDF

47.5 KB Created: 2020-10-26 08:27:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 87fc3214ec7a4760d5a8ebccbde55b6d SHA-1: 55ef384e0b5b3c5e0394130128c264344efb216d SHA-256: 6c480ce617ad2987296f151d60948a014013d4f5b3f8f1a63a941635478390d3
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://gettraff.ru/123?keyword=noktalama+i%25C5%259Faretleri+50+soru+pdf In PDF document text
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/1369412.pdfIn PDF document text
    • https://vodexekuteb.weebly.com/uploads/1/3/0/7/130776001/f408d59b913.pdfIn PDF document text
    • https://finiluxexolije.weebly.com/uploads/1/3/1/8/131856594/917616.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369164/normal_5f936a0e804a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388037/normal_5f94d0097fa02.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366366/normal_5f8a152dd3270.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378165/normal_5f8f9036ec455.pdfIn PDF document text
    • https://ruwadegefanum.weebly.com/uploads/1/3/4/1/134108857/8487090.pdfIn PDF document text
    • https://duxixujojive.weebly.com/uploads/1/3/0/7/130739103/6c26f1410aadb18.pdfIn PDF document text
    • https://letalisukom.weebly.com/uploads/1/3/4/3/134316231/kajajo.pdfIn PDF document text
    • https://zotorakiv.weebly.com/uploads/1/3/0/7/130739478/2316966.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/1/0501/0807/2104/files/iso_9001_revision_2015_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6950/5187/files/stickman_games_mod_apk_android_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/0507/8434/files/22319178371.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5111/7475/files/regular_verbs_list_english_spanish.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/1673/0799/files/97513331893.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7808/1959/files/figury_paskie_sprawdzian_3_gimnazjum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/1910/5979/files/netgear_genie_apk_old_version.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9779/2420/files/learn_by_doing_microsoft_word_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/4660/3414/files/one_qr_code_for_ios_and_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3349/3658/files/95746384069.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_off0000683d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x683D 5512 bytes
SHA-256: b3978f404a2d08cb3ae26bbdc87b0ec0f47f65eb999a013cbe7c2acd0a11ee9e
font_01_sfnt_off00007a86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A86 12104 bytes
SHA-256: b3f3eb6f3a3393b52a740455c822730b1e37530deb92763e8df08f9d1c5b8647
font_02_sfnt_off0000a062.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA062 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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