Malicious PDF — malware analysis report

Static analysis result for SHA-256 1562257b00571f65…

MALICIOUS

PDF

75.4 KB Created: 2021-03-10 21:55:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ced7eedbb0dac6cbf8c9c57c5eeab1f1 SHA-1: d04adde057b4dfc49c95ce8b0ecc4b5523b77eb0 SHA-256: 1562257b00571f65f2b8ce82c8f00c07132d3fc9a0ae845b15a906d04d14c292
96 Risk Score

Malware Insights

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

The PDF contains a heuristic firing indicating a mass external PDF link farm, with numerous URLs pointing to various PDF files. The primary URL suggests a lure related to vacuum cleaner parts, likely to attract unsuspecting users. While no scripts were directly extracted, the structure and numerous external links are indicative of a malicious attempt to drive traffic or host malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • 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.
  • 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/strik?utm_term=hoover+windtunnel+central+vacuum+parts
    • https://makumagem.weebly.com/uploads/1/3/4/3/134373862/lufoputegok.pdf
    • http://bravos-kids.ru/545174858433ofwa.pdf
    • http://groshyk.site/john_deere_316_motor_swap1sw3p.pdf
    • http://mnclassis.org/50606581686xqx37.pdf
    • http://mysteps.online/clinical_scenarios_in_surgerybvn9n.pdf
    • https://fijuvosezo.weebly.com/uploads/1/3/4/0/134096395/guwuzomene.pdf
    • https://soxoxalumowaju.weebly.com/uploads/1/3/4/7/134768556/dcd14ee89.pdf
    • https://jufapagemegugux.weebly.com/uploads/1/3/4/8/134860181/punefomakixoxiva.pdf
    • http://successinyourlif.website/sketchup_free_protractorvl8l2.pdf
    • https://zudibuliri.weebly.com/uploads/1/3/5/3/135319562/3102407.pdf
    • http://mini-camera-super.club/luxurolewanelojimikoraj9x5b2.pdf
    • http://freds.space/how_to_win_hoverboard_race_ratchet_and_clanko9pwt.pdf
    • https://webakutukulufu.weebly.com/uploads/1/3/2/6/132683024/b1a15bf113e.pdf
    • https://rinotawobuv.weebly.com/uploads/1/3/4/7/134768279/4979297.pdf
    • http://c-advance.space/antropologia_del_cuerpo_le_bretonicvlz.pdf
    • http://milanomoda-italy.site/97168829094vx1t7.pdf
    • https://vilinumatilaji.weebly.com/uploads/1/3/2/7/132740241/zepom.pdf
    • http://creditscorehelp.info/viking_refrigerator_water_filter_bypassymxhv.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://882e4f53-a7e1-4d4a-89e8-a6e6d9f9b805.filesusr.com/ugd/9a13d2_851b0a9c48794627b9eeddb838b93c72.pdf?index=true
    • https://s3.amazonaws.com/wewuxuviwar/google_spreadsheet_login.pdf
    • https://s3.amazonaws.com/livivuvuwugeb/anime_tube_unlimited_pc.pdf
    • https://1fc3e790-19e1-43b7-bae7-d09a953f51fe.filesusr.com/ugd/2c608b_e03ede11c7a6494db8b7dd02e7362ae8.pdf?index=true
    • https://s3.amazonaws.com/fajujiju/kidde_smoke_and_carbon_monoxide_alarm_battery_type.pdf
    • https://6196a4e6-b3b5-4a85-a139-4ec84e0a53d9.filesusr.com/ugd/d01287_c67d36189bcc42cba53cca45cd8bcf75.pdf?index=true
    • https://s3.amazonaws.com/mavixu/57322846957.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e766.bin
713c65abd4b61f38f18d1d2af429f517c89aebd73642fd04140c0c86c03bdf37		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE766 5332 bytes
font_01_sfnt_off0000f982.bin
1e89fa4cc51f3a1b61a58eac6211fb36775ec8757ec5e1b4f03bca0abe756075		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF982 11364 bytes

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