Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e94a77c83635e78…

MALICIOUS

PDF

83.8 KB Created: 2021-04-30 09:59:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: a7962f0ba7ae174744ec2d577c20fca1 SHA-1: d931901bddb65e969036a282928a17dc763117b5 SHA-256: 9e94a77c83635e789248cf05939f17441438f984ce0dd35a57804253e3753eb4
96 Risk Score

Malware Insights

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

The sample was flagged by a machine learning classifier and ClamAV as malicious, indicating a high probability of malicious intent. The presence of multiple unknown URLs, including one directly embedded in the document's URI, suggests a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains references to product names and application details, likely serving as a lure to encourage users to interact with the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://xezojetit.ru/strik?utm_term=chicco+nextfit+zip+max+air+convertible+car+seat PDF link annotation
    • http://ru-order-687646765445.art/nordictrack_2.75_chp_treadmill_c700_reviewsrc4lj.pdfIn PDF document text
    • http://dezlice.ru/luwelatejogoja29a3h.pdfIn PDF document text
    • http://cabinetsly.xyz/ge_true_temp_double_oven_326b1230p001f6uik.pdfIn PDF document text
    • http://ighelperscenter.com/zezonebomawo37uqt.pdfIn PDF document text
    • http://lnstagramverifiedsbadgesforms.com/ionic_breeze_quadra_ozone3xpvi.pdfIn PDF document text
    • http://lawyer-consult.ru/pipegatokmyxln.pdfIn PDF document text
    • http://dfwshootersupply.com/vejojerifutmxwc.pdfIn PDF document text
    • https://cdn.sqhk.co/kinemefuwa/gidPghh/lynx_lake_weather_tomorrow.pdfIn PDF document text
    • https://cdn.sqhk.co/jabosuve/Ikhctjj/5668160055.pdfIn PDF document text
    • http://boevoenlp.com/doseluzaxujimixirekavo4ixm8.pdfIn PDF document text
    • http://sayfelengs.space/pawimosawoliwudrdjq9.pdfIn PDF document text
    • https://cdn.sqhk.co/jotapepikota/jhY5xQM/the_solar_system_song_silly_school_songs.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/jozaponi/encyclopedia_of_candlestick_charts_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxefemebidaz/8730437197.pdfIn PDF document text
    • https://964beff5-d24f-450a-94e2-fa7e9faef44a.filesusr.com/ugd/61158f_361917eb9ccd47fc9f948de7ebf39b4d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wemofodi/zerumurane.pdfIn PDF document text
    • https://5a20c861-23fd-468b-888e-078c5342874f.filesusr.com/ugd/924841_213dd08f757b42abb7b71cc3727f7693.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dibedamoka/free_printable_hogwarts_letter_template.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/xipijevifirojefike.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_off0001094b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1094B 5480 bytes
SHA-256: 90198fa781afb609ddd585be8bc9c485d280c11f7a728df934205b07bd534d33
font_01_sfnt_off00011bd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BD0 10672 bytes
SHA-256: 9209076f75b7ef78b0ea9f09e788ed5d211e87e53330c6edc4f3d9b5072023ab

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