Malicious PDF — malware analysis report

Static analysis result for SHA-256 05dab48efe7f1c74…

MALICIOUS

PDF

70.1 KB Created: 2021-03-24 19:40:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4719e916110b302f84d2a09a1728a413 SHA-1: 275c235ec615458f588663db4d8be0d04e8823c6 SHA-256: 05dab48efe7f1c74e3462a7f0926334f629c0fcb05261bb4f50d15155c819562
96 Risk Score

Malware Insights

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

The PDF document contains embedded URLs that lead to malicious domains, disguised as appliance manuals. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the presence of external URIs and the nature of the PDF suggest it may leverage JavaScript for exploitation or redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ponafet.ru/wix?keyword=toastmaster+belgian+waffle+maker+twb2+manual
    • http://huaweistoreukr.xyz/how_to_set_up_an_rca_sound_bar5gpeg.pdf
    • https://static.s123-cdn-static.com/uploads/4426971/normal_5fee7e9729c84.pdf
    • https://cdn-cms.f-static.net/uploads/4473902/normal_6056895fc246b.pdf
    • http://thecet.xyz/graphing_and_analyzing_scientific_data_answer_key2vpvz.pdf
    • http://dfds.in/28698193779glh4v.pdf
    • http://wekeb.space/maytag_medx655dw1_owners_manual12e07.pdf
    • http://collegegraduatecentraldating.com/27670456380z2yoh.pdf
    • https://cdn-cms.f-static.net/uploads/4380528/normal_6038fb21bd89d.pdf
    • http://allroadkamchatka.ru/13043367846ksjsx.pdf
    • https://cdn-cms.f-static.net/uploads/4481424/normal_602e6056e082f.pdf
    • https://static.s123-cdn-static.com/uploads/4381964/normal_5ffb8642ed039.pdf
    • https://mepopukivar.weebly.com/uploads/1/3/6/0/136083549/sabegosisuvaweb-lekejitinuxa-jokapewibifad.pdf
    • http://idealicaitalia-oficial.site/1247138077337xzv.pdf
    • https://cdn.sqhk.co/duponetix/iRsi7Wk/kitifumebagideponuvezalut.pdf
    • https://cdn.sqhk.co/duzoxibuf/eghIhjk/bucket_list_movie_quotes_3_things.pdf
    • http://zdorovie-vashe-vse.xyz/2202597090rrjz3.pdf
    • https://cdn-cms.f-static.net/uploads/4448718/normal_604796c1ca38c.pdf
    • https://jadanimotubow.weebly.com/uploads/1/3/1/8/131856100/xumejodoguvegu.pdf
    • https://static.s123-cdn-static.com/uploads/4409114/normal_5fe5a199020bc.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c5b5.bin
deae2c50645965137f9db25f2f846d95837ce57659b8da618ae7406a92aaf4d7
pdf-font-stream PDF embedded font (sfnt) at offset 0xC5B5 5348 bytes
font_01_sfnt_off0000d7e5.bin
8f7c1b77509d11cfbe1ef7d9258d18ad73bf679cd42297d085fb181b13b03b75
pdf-font-stream PDF embedded font (sfnt) at offset 0xD7E5 10216 bytes
font_02_sfnt_off0000fae3.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0xFAE3 4324 bytes