Malicious PDF — malware analysis report

Static analysis result for SHA-256 73728593628442c1…

MALICIOUS

PDF

80.1 KB Created: 2021-03-18 13:00:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8b419ff34a34eba0dbcf1673dbac765f SHA-1: 2af6e9c3933d9797ad8584e88b262d38c9bdb0da SHA-256: 73728593628442c18b77c70ce64e5b4e5bc4b51b424b0d90418c4f5c2c664b4f
176 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one prominent URL pointing to a suspicious domain. Heuristics indicate a 'PDF_SEO_LINK_FARM' and 'PDF_URI', suggesting an attempt to direct users to malicious content. The 'ML_NYX_PDF_MALICIOUS' and 'CLAMAV_DETECTION' firings further confirm the malicious nature of the file, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

Heuristics 6

  • 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
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://vilenefex.ru/wix?keyword=eagle+pass+high+school+website
    • http://lorewipa.scienceontheweb.net/49327631961.pdf
    • http://xevamoz.mygamesonline.org/sentimental_journey_lyrics.pdf
    • http://koxivesuvif.mypressonline.com/hunter_x_core_timer_manual.pdf
    • https://cdn.sqhk.co/tegatiwuwax/fUhcjde/social_dev_story_platform_development.pdf
    • https://cdn.sqhk.co/gajerivab/ihfwkwj/negin_mirsalehi_vegan_leather_boyfriend_blazer.pdf
    • http://delinapod.mypressonline.com/virujazasiwixevasawew.pdf
    • http://sutarakikim.scienceontheweb.net/ravelerevuxabuwulone.pdf
    • https://cdn.sqhk.co/bubuzibiv/giieEGS/66965899589.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://9a4203bb-6ff2-4ef1-9c63-3f113f84a884.filesusr.com/ugd/ea9bdf_4e915fa6d18244cb840f9e09b34a15b3.pdf?index=true
    • https://uploads.strikinglycdn.com/files/5a77f720-930b-44e9-a539-b5206df94eee/how_much_auto_technician_make.pdf
    • https://uploads.strikinglycdn.com/files/dccaa88e-45a5-42d2-a1fd-e809bd3893c2/what_does_the_word_b_mean_in_slang.pdf
    • https://uploads.strikinglycdn.com/files/908d0345-a35e-4030-8435-027147b169b1/genie_2042_programming.pdf
    • https://54e283d8-6946-47af-b6e3-c78582312647.filesusr.com/ugd/22cd47_fe422f98bc9b46349f052978baa76049.pdf?index=true
    • https://uploads.strikinglycdn.com/files/4d11e880-a825-4d06-86dc-17f6b7f82d11/how_much_do_interior_designers_make_a_month_in_california.pdf
    • http://bagomilovop.epizy.com/weneditakelimufivu.pdf
    • https://uploads.strikinglycdn.com/files/9fa8ebcd-6314-44a0-a14a-4a6e2796b272/92160663845.pdf
    • https://uploads.strikinglycdn.com/files/f5148752-8327-48e3-831e-150f969209c2/hp_officejet_pro_6835_not_printing_black.pdf
    • http://xumavesefixodu.rf.gd/mipuritalugu.pdf
    • https://7980b0ff-2efe-48f4-a442-6c87bca80713.filesusr.com/ugd/9bd8c3_d59605fe9c974ef0a209e6add3ff62d6.pdf?index=true
    • https://04934832-22f3-474e-96de-b9d593e92251.filesusr.com/ugd/f390e7_f70fa5fa998e4b03a74ec28b9ba7dda3.pdf?index=true
    • http://janeresofopojaz.epizy.com/antistreptolysin_o_test.pdf
    • https://uploads.strikinglycdn.com/files/ebf06ee2-dd56-44e1-95a3-7ba2d959a438/developmentally_appropriate_practice_focus_on_infants_and_toddlers_rent.pdf
    • http://radagofisi.epizy.com/bemurikoviniwudi.pdf
    • http://pigibotokaper.epizy.com/grade_7_term_3_maths_test.pdf
    • https://uploads.strikinglycdn.com/files/33c354e3-7650-487c-8b83-7f2e44b8557b/nabasafasuketa.pdf
    • https://d451e762-8e00-4155-9971-9512d28d2528.filesusr.com/ugd/b52961_b6828c3a69a048848fe75912beabb992.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f71e.bin
ff78b6ce456177acadb7100bafe5ee7fe960c3d47dbedf9a3af16c8ca04b86e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF71E 5288 bytes
font_01_sfnt_off00010937.bin
135128b9040a971ca0cedc6010be82e79ecbef7549ab10088e896f008f408914		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10937 11864 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.