Malicious PDF — malware analysis report

Static analysis result for SHA-256 e101a97e83668f56…

MALICIOUS

PDF

84.9 KB Created: 2021-03-17 21:51:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eee3204eaf473e3009b0d4f72917c135 SHA-1: e5e2bc01d6797e19b624b07417da7b5cd62471b0 SHA-256: e101a97e83668f560b7d12a57ac13f6a55a466eaea7e0267ce6b9e944aa3260f
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one heuristic specifically identifying a "PDF_SEO_LINK_FARM". The document body, though heavily obfuscated, contains text related to "Amulet book 8 supernova pdf", suggesting a lure. The presence of multiple unknown URLs and a ClamAV detection for "Pdf.Phishing.Trojan" strongly indicates a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://botokaw.ru/award?keyword=amulet+book+8+supernova+pdf
    • https://static.s123-cdn-static.com/uploads/4378608/normal_5fe1c22856e43.pdf
    • https://static.s123-cdn-static.com/uploads/4490370/normal_5fc7a8fe334e3.pdf
    • http://potenciy.xyz/walmart_near_me_open_latenx1mc.pdf
    • https://static.s123-cdn-static.com/uploads/4367668/normal_600560942cf55.pdf
    • https://static.s123-cdn-static.com/uploads/4366976/normal_5fc9e683b6388.pdf
    • http://milano-moda.space/tamil_movies_2018_isaimini._com1akvp.pdf
    • https://pijatopug.weebly.com/uploads/1/3/5/3/135303623/1d18fd791.pdf
    • http://freds.space/melodyne_serial_number_license_keyr301z.pdf
    • https://cdn-cms.f-static.net/uploads/4462775/normal_60275a4713150.pdf
    • https://cdn-cms.f-static.net/uploads/4501204/normal_60442edacff9d.pdf
    • https://cdn-cms.f-static.net/uploads/4416502/normal_603ecfdab8f18.pdf
    • https://lemuvizavo.weebly.com/uploads/1/3/2/6/132682731/navepunejunej-xukowibiw-nezebol.pdf
    • https://sopakefexije.weebly.com/uploads/1/3/4/3/134398413/1809174.pdf
    • http://my-favshope.online/zosuzuwapufupasizavazajup4hc3.pdf
    • https://cdn-cms.f-static.net/uploads/4409609/normal_6028e471e16f9.pdf
    • https://cdn-cms.f-static.net/uploads/4446944/normal_604cd78b5dddb.pdf
    • https://cdn-cms.f-static.net/uploads/4454965/normal_60308c3b5ebe2.pdf
    • https://mebotorafegamor.weebly.com/uploads/1/3/0/7/130739377/e608fc617b1161.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://e691ad07-92dc-45fa-af10-8929b4045ede.filesusr.com/ugd/87b9a8_d3ba57f2c67a4ccc99759dc8e6bad6cd.pdf?index=true
    • https://ac4cd5cf-e861-4b1b-a585-e47049f737a6.filesusr.com/ugd/843280_16a3f2ee7a95497d8d075e4ffb8e19ca.pdf?index=true
    • https://083189c9-8220-4687-a375-57be19a37228.filesusr.com/ugd/909b15_d1595183ca4246d58f4f332df33ff66f.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f316.bin
c9399f234be951136224e595498631b206301346146735dc1b93bb0fcfd753ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF316 8968 bytes
font_01_sfnt_off00010af2.bin
b4674eebc85a67790ae53fee06be54ec6fb93002846d658168e7f4c27c39d73b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10AF2 5636 bytes
font_02_sfnt_off00011e0c.bin
3030f395d8a46144856a8093bd63c063b73533d70428325466e29e3a090334c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11E0C 11840 bytes

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