Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ed3123352e5b946…

MALICIOUS

PDF

66.6 KB Created: 2021-05-09 17:10:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 58fe7475ce57b01722fbd2b7da4ef024 SHA-1: e18424c2af8fd12446669451a132f9d405ea1a53 SHA-256: 7ed3123352e5b946810166506e29169c306a1ea9358c2c1ed421acaedf7f1270
124 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs and is flagged by ML classifiers and ClamAV as malicious. The document body, though obfuscated, suggests a lure related to a sprinkler system manual, which is likely a pretext for directing users to malicious sites. The presence of numerous external URIs and link farm heuristics indicates a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8273

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
  • 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
  • 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://soxebez.ru/strik?utm_term=orbit+57161+sprinkler+system+6-station+standard+indoor+timer+manual PDF link annotation
    • http://jakartapro.xyz/78058314854xoyhg.pdfIn PDF document text
    • http://aycotoro0.xyz/zentangle_blank_templatesclf8n.pdfIn PDF document text
    • https://cdn.sqhk.co/muwitajo/ThhjiVR/rawepubujanelalamaforu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425919/normal_6060091f7bfd3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475570/normal_6046f1f3017ed.pdfIn PDF document text
    • http://sunny-web.ru/50130034071bzegb.pdfIn PDF document text
    • https://cdn.sqhk.co/marezotije/9IeBPja/dismounting_masters_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453900/normal_60141abf11a1e.pdfIn PDF document text
    • http://nukels.xyz/labunefirepulajinmvdfd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417309/normal_5ff0cc4f48990.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410027/normal_5fc7d635e84c5.pdfIn PDF document text
    • http://hd-cam-mirror-up1.club/864785502482hxqw.pdfIn PDF document text
    • https://cdn.sqhk.co/vawadawuleja/ifp2hds/91850963076.pdfIn PDF document text
    • https://cdn.sqhk.co/xexodaxafu/hiighgz/candy_camera_hack_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tuxalowafokuvo/zanefekunowilon.pdfIn PDF document text
    • https://425e2ee7-996f-4c6d-a593-b44a2a39b733.filesusr.com/ugd/bb05c1_cd17c3610bfc4734a634f249874a25cf.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/br_ambedkar_song_free.pdfIn PDF document text
    • https://96a9e3af-f0c3-4048-9e6c-0ad8da3c6018.filesusr.com/ugd/15d534_8324dc3606f142a3a00342c961e79341.pdf?index=trueIn PDF document text
    • https://02408c19-b9f6-4996-a596-1d5b7e46c8d3.filesusr.com/ugd/c83fdb_831a0bfa14b743b48d5015b37411c87e.pdf?index=trueIn PDF document text
    • https://e1eccfe9-8888-4f52-a155-e9c8e84e0752.filesusr.com/ugd/4fb05f_b06cb0e2db5e4a04a54759cf655c14bf.pdf?index=trueIn PDF document text
    • https://69f6cc44-9198-4e41-bafa-43503dba92bf.filesusr.com/ugd/dec231_990da093d0d949899826db785c0658a3.pdf?index=trueIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ecea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECEA 5880 bytes
SHA-256: a82ad8cb7f27d6b0334f3c07b05daf805e9c1bf84542b75a08884bfde5e46b54

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