Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd0e35685f5e862f…

MALICIOUS

PDF

81.1 KB Created: 2021-05-30 21:30:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2e84d7ba6e921a87eaec8b512cefe485 SHA-1: e0a9f6d17c8bc61630719e2576744a11f0e67685 SHA-256: dd0e35685f5e862f68f92e958241bdb527e861684782be26153d561b8c03bfc7
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous external links, with a primary suspicious URL pointing to 'baarspo.ru'. The document body, though heavily obfuscated, suggests a lure related to a 'piano pdf', likely to entice users to click the embedded malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://baarspo.ru/123?utm_term=thinking+out+loud+piano+pdf
    • https://cdn-cms.f-static.net/uploads/4450046/normal_601348d39ce08.pdf
    • https://cdn-cms.f-static.net/uploads/4413109/normal_5fd3a4e244c40.pdf
    • https://cdn-cms.f-static.net/uploads/4418401/normal_6067d962b583f.pdf
    • https://cdn-cms.f-static.net/uploads/4463788/normal_6044fa3d72ed1.pdf
    • https://static.s123-cdn-static.com/uploads/4381980/normal_5fe38eb8bb46f.pdf
    • https://cdn-cms.f-static.net/uploads/4503197/normal_603c19c4c0e64.pdf
    • https://ripujiragepago.weebly.com/uploads/1/3/4/0/134012555/bc1a7cc2321b9eb.pdf
    • https://jopokoguse.weebly.com/uploads/1/3/0/8/130874396/117e7088db95.pdf
    • https://vilemanunopabom.weebly.com/uploads/1/3/4/3/134317174/8893172.pdf
    • https://cdn-cms.f-static.net/uploads/4406213/normal_5fd9137bf3bcb.pdf
    • https://cdn-cms.f-static.net/uploads/4425768/normal_6036d67826d62.pdf
    • https://sotogirepatobob.weebly.com/uploads/1/3/1/4/131453915/861178.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/50f8f8db-5f39-4ab8-a053-0016f1d6a3fa/kannada_krishnan_marriage_story_movie_songs_download.pdf
    • https://uploads.strikinglycdn.com/files/7290254f-3d87-4095-bf31-2254711be279/12203777235.pdf
    • https://uploads.strikinglycdn.com/files/b20acf6c-067f-47f9-92c4-19dd65c42285/okin_lift_chair_power_cord.pdf
    • https://uploads.strikinglycdn.com/files/fc13ca00-da4f-49ea-98d9-206b53e28eea/what_is_the_best_stock_market_to_buy_in_gta_5.pdf
    • https://uploads.strikinglycdn.com/files/a11157de-c5ba-4dbc-bd27-339da8b20523/astm_a328_steel_sheet_piling.pdf
    • https://uploads.strikinglycdn.com/files/5abd8012-37e3-42d6-b229-9950ca8b52a0/36061745951.pdf
    • https://uploads.strikinglycdn.com/files/1866cfca-2a2c-4e6b-bfdf-990d0b4c14fd/frogs_fleas_and_painted_cubes_answer_key.pdf
    • https://uploads.strikinglycdn.com/files/efcd971e-300f-4a89-8d10-a164ba779507/fakud.pdf
    • https://uploads.strikinglycdn.com/files/3dd76c50-c559-49f8-957d-bbb4a4f65828/active_and_passive_voice_exercises_for_ssc.pdf
    • https://uploads.strikinglycdn.com/files/37a46447-e048-49c0-b736-0f1ccbf49c28/70502230537.pdf
    • https://uploads.strikinglycdn.com/files/799888e5-985c-422c-86e4-603b22f4fff1/jivovu.pdf
    • https://uploads.strikinglycdn.com/files/87bf6ff3-800a-4bb8-bd25-e09bb772fbd0/28377061115.pdf
    • https://uploads.strikinglycdn.com/files/0cd76cff-6a11-49bf-af43-10b1f955df1b/93254117377.pdf
    • 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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e90d.bin
8bc5330b61799880bef7fac400dad44a58cf2095d7f7c63d8a071a202145fa65		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE90D 5044 bytes
font_01_sfnt_off0000fa3b.bin
7a95906d89e42d6bb0c673a3b1d196360341d6b0ffb0aa54ce8623687c08aad6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA3B 10792 bytes
font_02_sfnt_off00011f31.bin
bf8f9ece8d9d74ce2d7a98a07ee1bb8f4056faf702b3b1702118181e85f1b939		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11F31 16312 bytes

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