Malicious PDF — malware analysis report

Static analysis result for SHA-256 a154c96e193cd90e…

MALICIOUS

PDF

72.7 KB Created: 2021-01-05 06:19:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 63b60ee878d6f13d0ec2cc2d09a46526 SHA-1: 94ed7af2d61467baf03709118bdf5f747f75d6ce SHA-256: a154c96e193cd90ed7040a076f8954a72cbff7932ce218ff0e4aeaf55f9b9a4a
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://cctraff.ru/aws?utm_term=analytics+report+chart+salesforce'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of a malicious URL within the document body, disguised with terms like 'Analytics report chart salesforce', indicates a phishing or malware delivery attempt.

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
  • 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.
  • 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://cctraff.ru/aws?utm_term=analytics+report+chart+salesforce In PDF document text
    • https://cdn.sqhk.co/jalafimimodo/YAHfwJ6/the_financial_advisers_act_2008.pdfIn PDF document text
    • https://cdn.sqhk.co/gadukupuwe/Ijghh6c/51673666764.pdfIn PDF document text
    • https://cdn.sqhk.co/lixozimiz/chax0pg/71922300050.pdfIn PDF document text
    • https://cdn.sqhk.co/joxomawezu/jjgjijQ/adafruit_audio_fx_sound_board_troubleshooting.pdfIn PDF document text
    • https://cdn.sqhk.co/jafetegupam/ibgc5gg/craftsman_snowblower_won_t_start.pdfIn PDF document text
    • https://cdn.sqhk.co/muzubasiwu/heghJE5/hitman_2_gold_edition_contents.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/bupaxomu/68569122100.pdfIn PDF document text
    • https://s3.amazonaws.com/pazatuv/86937078326.pdfIn PDF document text
    • https://s3.amazonaws.com/megodipewukitoj/97320571707.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55747427-2c6c-4881-be05-07bd00863668/31781991563.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39a3cffd-1fc2-4294-a329-d356751cbe1b/9961745436.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be52b350-f42a-4164-b4e1-780865f5bd6e/mulevawamini.pdfIn PDF document text
    • https://s3.amazonaws.com/dutuzanob/bitmoji_apk_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbf4d54a-fc28-4373-b99d-699a04bf1106/pepimusamesuvelozarexeto.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f58e2cb-b181-43b5-a743-7e243e37d6bf/88724856297.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/ratio_and_proportion_aptitude_questions_with_answers_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/kosipefojaw/denokiwaxedupiwite.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_off0000de33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE33 5192 bytes
SHA-256: d2f1c3994d81756f172af4ca90f3caa56f2e94a2ca6456cb70c2a93161674c76
font_01_sfnt_off0000efe5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFE5 11084 bytes
SHA-256: 05c9759a4c55183f1385a725a4ce2d625f09a165d3810969205b97dc2aab1626

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