Malicious PDF — malware analysis report

Static analysis result for SHA-256 322462cc126e3872…

MALICIOUS

PDF

76.0 KB Created: 2021-03-07 03:32:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 6efb72fdf2cb38fa4f77029ebb08ee55 SHA-1: 176a7f3d56d4433c45514d44f0532e58fb76bbae SHA-256: 322462cc126e38720a35b8e0187c72726820f45192fe2df91051cdfe2f597ef7
146 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, and exhibits characteristics of a callback phishing lure. It contains numerous external URIs, many of which point to disposable hosting, suggesting an attempt to obscure the true malicious destination. While no scripts were explicitly extracted, the PDF structure and embedded URIs indicate a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://jottigo.ru/strik?utm_term=stephen+king+the+outsider+characters PDF link annotation
    • http://pawezujexas.mywebcommunity.org/what_does_the_suffix_gress_mean.pdfIn PDF document text
    • http://tolofat.22web.org/the_standard_hotel_restaurant_new_york.pdfIn PDF document text
    • https://wivupenoremew.weebly.com/uploads/1/3/0/7/130775018/wusorunesaseritij.pdfIn PDF document text
    • https://leburivirabilaz.weebly.com/uploads/1/3/1/4/131453170/fonisademolowaj.pdfIn PDF document text
    • https://xuwukixirekut.weebly.com/uploads/1/3/5/9/135966502/538429.pdfIn PDF document text
    • http://dusikazo.mypressonline.com/fly_tying_kit_reviews.pdfIn PDF document text
    • http://sidazolomaw.22web.org/60366670960.pdfIn PDF document text
    • https://dizakevusarebiz.weebly.com/uploads/1/3/4/5/134581037/tigetenujolirem.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xobibaga.myartsonline.com/galaxy_note_20_ultra_review_youtube.pdfIn PDF document text
    • http://fobonerenajob.epizy.com/dryer_sheet_hacks_to_clean_stove_top.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/sheet_metal_gauge_to_millimeters.pdfIn PDF document text
    • http://temolujipu.myartsonline.com/can_you_connect_soundbar_to_monitor.pdfIn PDF document text
    • https://s3.amazonaws.com/domegagowevag/erectile_dysfunction_guidelines_canada.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxalowafokuvo/dividing_polynomials_box_method_worksheet.pdfIn PDF document text
    • http://bodiluduf.rf.gd/94460009205.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0475e45f-aa10-4cdd-b217-ab5d9d4be908/how_long_to_charge_doro_phone_battery.pdfIn PDF document text
    • https://s3.amazonaws.com/fusidejebi/new_album_video_song_2019.pdfIn PDF document text
    • http://lugopupi.rf.gd/guzibofejovunexipadogonaw.pdfIn PDF document text
    • https://s3.amazonaws.com/xeponodij/how_long_to_gre_scores_take_to_send.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a159751-8923-401e-8113-08ce5267da6c/how_to_use_commercial_electric_voltage_tester.pdfIn PDF document text
    • http://datidogebe.epizy.com/79268330044.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40a59214-2163-4079-9b20-56326aaa0229/delonghi_safe_heat_heater_instructions.pdfIn PDF document text
    • http://tidefos.epizy.com/topical_sermon_outline_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38347334-9ebb-4db3-8ae5-fdec619f8b27/xapoperisozitunaxug.pdfIn PDF document text
    • http://jowuwivipi.rf.gd/10799144878.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_off0000ecd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECD0 5468 bytes
SHA-256: 0df2cd6ddf1fb1bda84b395076289679aed5610b2a30f4e742e03d0989eb7286
font_01_sfnt_off0000ff64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF64 10240 bytes
SHA-256: a66c0287c820228ef23e882240ef90f5d947c148a09d09f4787231815583c4d8