Malicious PDF — malware analysis report

Static analysis result for SHA-256 0124b018fdae9a44…

MALICIOUS

PDF

47.8 KB Created: 2020-10-11 05:32:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 06264898c4940b5c0b7b20a83cd08e40 SHA-1: 9ca207e2cba085d400dfc0de35c7f260f2af8990 SHA-256: 0124b018fdae9a4446ebce4958271ad9bef03de3af64ddc97b17f72c28d28108
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://ggtraff.ru/pify?keyword=pecatonica+high+school+shooting In PDF document text
    • http://files.holisticcoachsg.com/uploads/1/3/1/4/131407705/7bde5.pdfIn PDF document text
    • http://files.bohojosboutique.com/uploads/1/3/0/7/130739747/lajosazukovakigadef.pdfIn PDF document text
    • http://files.attitude4acting.com/uploads/1/3/0/9/130969130/2888856.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/1/0482/6952/5154/files/bee_movie_vanessa_meme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1630/4278/files/nipifetazodo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0456/7450/files/bio_clean_drain_cleaner_reviews.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/4173/8911/files/thanksgiving_dinner_word_whizzle_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/0136/8743/files/sun_city_palm_desert_golf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/7150/8122/files/swtor_6.0_augments.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4405/2898/files/its_kind_of_a_funny_story_book_summary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7704/9247/files/xuliwib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5479/1832/files/daughters_of_the_nile_logo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/1821/0458/files/17709757570.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/4627/6772/files/the_conceptual_framework_for_financial_reporting_consists_of_how_many_levels.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/8122/3332/files/treat_your_own_back_by_robin_a._mckenzie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4844/9686/files/xalujotufesegi.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_off000071d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71D1 4968 bytes
SHA-256: 767d3c588937d9407e1e1f6fa4dd3b0f12f878c13fe77d29e56a6f66fc6974b3
font_01_sfnt_off000082a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82A9 1996 bytes
SHA-256: c161700250722520d77267804a54043d9aeb03a6417870bc1f87c35a435b1c9d
font_02_sfnt_off00008c0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C0E 10672 bytes
SHA-256: 3e670da4efcee180a54bb0c851b50e1585199ec26226d1e10dc8c4b382a4e6f4

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