Malicious PDF — malware analysis report

Static analysis result for SHA-256 96aa8ba920409f03…

MALICIOUS

PDF

78.2 KB Created: 2021-03-14 19:25:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: b8df2ade3afbeada6d4b0b3040ffeada SHA-1: bbd759fe3c26e8df68b17b0a7b50b40bd712869d SHA-256: 96aa8ba920409f03c41d06deff3f71885cb284922c3c7a12de0a897690e0083e
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains heuristics indicating it is a phishing or malware distribution lure, specifically referencing an SEO link farm and an image lure linking to a redirector. The embedded URL 'https://fokemale.ru/wix?keyword=mr+coffee+iced+tea+maker+instructions+with+pictures' is suspicious and likely leads to a malicious site. ClamAV detection further confirms its malicious nature, classifying it as 'Pdf.Phishing.Trojan'. No scripts were extracted, but the overall structure and URL suggest a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://fokemale.ru/wix?keyword=mr+coffee+iced+tea+maker+instructions+with+pictures PDF link annotation
    • http://riwozizedilar.mygamesonline.org/kikudegedakilamaxugewifo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/81936239104.pdfIn PDF document text
    • https://s3.amazonaws.com/gonima/barbara_cartland_books.pdfIn PDF document text
    • https://a815f367-2516-4b88-9496-eed07d5c1eb7.filesusr.com/ugd/665c20_c85639948ecb4527808d4297210334d9.pdf?index=trueIn PDF document text
    • https://6998e30b-c911-4113-ab34-4c15204891c7.filesusr.com/ugd/429b25_1ead487877764430bd5e06b3c0aaab33.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tubukeganuji/badlands_12000_winch_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/podawakumepewez/12570359496.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/used_2005_buick_allure_for_sale.pdfIn PDF document text
    • https://a0bbd489-bf03-48a0-8e93-88abd0751e5b.filesusr.com/ugd/370ea2_3d8e452e5d1544058467cadd58eb3c20.pdf?index=trueIn PDF document text
    • https://a3720f92-bdaa-4449-a3ff-14f36884d2d5.filesusr.com/ugd/afadc3_2664afc4fb144feca3fe85110b8bc820.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/remeranexe/xilekovidofojo.pdfIn PDF document text
    • https://fb4bdcd3-28a3-4206-a6c3-fb267f511c23.filesusr.com/ugd/0ad562_9add6fbb81a8448f9cd638ffc5b78e59.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wewiro/how_to_make_a_simple_paper_plane_that_can_fly.pdfIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/15696197773.pdfIn PDF document text
    • https://s3.amazonaws.com/gezizefefififa/anydesk_free_cnet.pdfIn PDF document text
    • https://s3.amazonaws.com/fizufapu/rujomumesatofaputa.pdfIn PDF document text
    • https://235a1a37-2bc9-4d3b-8f1d-d3952ad9fba8.filesusr.com/ugd/3111f7_6d67e69817c345229abf9dc9fee46f3c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lezerawe/90510026015.pdfIn PDF document text
    • https://22e44a25-5b44-49ab-8bd1-9de78d2943b2.filesusr.com/ugd/cce535_52c4bfc235a9492bb29adae461cd95e8.pdf?index=trueIn PDF document text
    • http://lelikerakovet.atwebpages.com/28196415983.pdfIn PDF document text
    • https://s3.amazonaws.com/zozofufulolig/balo_da_informtica_paulnia_paulnia_sp.pdfIn PDF document text
    • https://s3.amazonaws.com/jakujakula/bagixef.pdfIn PDF document text
    • https://s3.amazonaws.com/debamijizozexo/h_s_c_result_2019_marksheet.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f44d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF44D 5524 bytes
SHA-256: 41ce01305bd3a899dd06c3c27579ab44f559789ecf38826739c1aea7963db541
font_01_sfnt_off0001070f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1070F 10516 bytes
SHA-256: 895bd287ee20a3f05f7069a4f14baae02bb6d305c47da5b71cef8e0f403c3543