Malicious PDF — malware analysis report

Static analysis result for SHA-256 85b54dc07313a0d3…

MALICIOUS

PDF

72.7 KB Created: 2021-03-14 13:22:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 136a63abfe31b62c01bdcf80800efaae SHA-1: e3402f89566dc2248d4ee58842018ccf354af24d SHA-256: 85b54dc07313a0d3e00d0dcc34e95940403767f6cfbc6b9417dd383f88932636
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to 'easy popular piano songs pdf'. No scripts were extracted, but the presence of external URIs and the overall detection profile strongly suggest a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://lozipotod.ru/award?keyword=easy+popular+piano+songs+pdf
    • http://doordash.fun/36969764483zrxli.pdf
    • http://istlan.space/ma_permit_test_questions_and_answersp0ozp.pdf
    • http://fomigiv.mypressonline.com/guzalezanafawisene.pdf
    • http://abreudesigns.com/all_navy_nec_codes_listcd2g9.pdf
    • http://punejew.mygamesonline.org/diablo_3_witch_doctor_poison_pet_build.pdf
    • https://mojoranazo.weebly.com/uploads/1/3/4/4/134403481/9991635.pdf
    • https://dibevapanowodi.weebly.com/uploads/1/3/0/7/130776811/xojaz_jenodavinuz_rerimofaluw.pdf
    • http://manidat.sportsontheweb.net/kexekowodawunojaro.pdf
    • http://cabinetsop.xyz/sony_xbr55x850b_manualji7e3.pdf
    • http://samoe-samaya.ru/14924150075lrmfg.pdf
    • https://kojiwoxoposegig.weebly.com/uploads/1/3/4/1/134108885/813c5c96cce2.pdf
    • https://balolenitazir.weebly.com/uploads/1/3/1/0/131071159/9357df18135.pdf
    • http://miribut.mywebcommunity.org/baby_items_checklist.pdf
    • https://kizuzeno.weebly.com/uploads/1/3/5/3/135326612/vipagiteviwalokorume.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wupagivoz/vasimovebizemeboral.pdf
    • https://uploads.strikinglycdn.com/files/7c99bd12-27a7-4384-a01a-cd356c5e8867/how_do_i_fix_my_electric_recliner_that_wont_close.pdf
    • https://uploads.strikinglycdn.com/files/cdd5e8cf-f560-4849-bbac-faf54af93dd1/linksys_wireless_n_range_extender_n300_setup.pdf
    • https://uploads.strikinglycdn.com/files/6c0b4601-0a9e-4761-b4b9-d55abf3df6d5/hamilton_beach_4_slice_toaster_oven_-_stainless_steel_31401.pdf
    • https://s3.amazonaws.com/dalava/pnrc_date_sheet_gnm_1st_year_2018.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_off0000dda6.bin
eb17f53d186985e12dc549ca10d8709dcd7d55b734bd8ca155200a991615fc69
pdf-font-stream PDF embedded font (sfnt) at offset 0xDDA6 5268 bytes
font_01_sfnt_off0000efac.bin
444755b3de38af2fe53e794e5e750529ea4e08871a6f0cd30d9f64db367423af
pdf-font-stream PDF embedded font (sfnt) at offset 0xEFAC 11232 bytes