Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc1ec3a5034892ef…

MALICIOUS

PDF

75.8 KB Created: 2021-03-05 18:43:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 776bdd91ee665c44ff52c597013c04c2 SHA-1: bc6665fc3f3c9ee15d3b4d1f5368b1588b6a5bac SHA-256: cc1ec3a5034892efd7d70881b172be03158735d8bab8331529ed19936236afc6
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ML and ClamAV, indicating malicious intent. It contains a large number of embedded URLs, many pointing to disposable or suspicious domains, suggesting a link farm or phishing lure. The presence of 'fnaf sister location apk android 1' in the document body suggests a lure for potentially unwanted or malicious software downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • 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.
  • 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://xajibur.ru/wix?keyword=fnaf+sister+location+apk+android+1 PDF link annotation
    • http://liolika-rsya.ru/cutting_tamil_videoxfvmf.pdfIn PDF document text
    • https://numeroluxovuz.weebly.com/uploads/1/3/4/7/134733954/rifazenaxunokida.pdfIn PDF document text
    • http://copyrighthelpcentral.com/black_and_decker_countertop_convection_oven_12_inch_pizza_capacity_manualvczei.pdfIn PDF document text
    • http://qunit.space/dokutujifilumusoxutiwenr027d.pdfIn PDF document text
    • http://probmake12.xyz/54578199204l4orr.pdfIn PDF document text
    • http://xplaintome.ru/where_the_red_fern_grows_accelerated_reader_test_answers34grn.pdfIn PDF document text
    • https://migobagola.weebly.com/uploads/1/3/4/8/134874333/povejegini_xepududa_gojefesamivaba_fibudemawero.pdfIn PDF document text
    • http://bumalutaf.iblogger.org/kapiboritusikuzetonipapi.pdfIn PDF document text
    • https://nakeripa.weebly.com/uploads/1/3/2/8/132814262/tomozegijadev.pdfIn PDF document text
    • http://rodsfish.club/belling_built_in_oven_manualjdnxb.pdfIn PDF document text
    • https://nutuvujupakumap.weebly.com/uploads/1/3/2/7/132740288/pokenivopavufuk.pdfIn PDF document text
    • http://select-get.top/how_to_treat_cat_wounds_naturallyqavtu.pdfIn PDF document text
    • https://fetuxugov.weebly.com/uploads/1/3/4/6/134655394/4224e5eff.pdfIn PDF document text
    • https://lebabipiw.weebly.com/uploads/1/3/0/9/130968925/gosawedudoponaxel.pdfIn PDF document text
    • http://clubstore.info/huntsman_winter_war_movie_download_in_tamilwybft.pdfIn PDF document text
    • https://jukovuwivoxufab.weebly.com/uploads/1/3/3/9/133997180/6df95.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://moroxite.epizy.com/acreditacion_universitaria_en_el_peru_2018.pdfIn PDF document text
    • http://setebixasabevu.rf.gd/xefesigagirewo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89817970-09d8-4f2a-bbeb-95a262f496d2/12822613674.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d62a7bad-91a4-4212-868d-f2844b633681/how_to_whitewash_pine_floors.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/079c7c66-7130-40d1-bcd7-2d78b6b02d69/vicks_vaporizer_pads_how_to_use.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b421755-1577-4ea1-98d0-f26ffcdb9c3c/brand_image_meaning_and_example.pdfIn PDF document text
    • http://lisuwar.rf.gd/clash_of_clans_updated_mod_apk.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_off0000eb6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB6F 5220 bytes
SHA-256: f7d7156164e45f9e345b77fafab11fd75c5c4ea2b73fddc1849dd00e1f647011
font_01_sfnt_off0000fd4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD4D 10832 bytes
SHA-256: f403b872f794bb2be4518a5fa73e05a63223c87d63b7df7adbd8a0f1fc2c43cb

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