Malicious PDF — malware analysis report

Static analysis result for SHA-256 80e9fe565b60dbae…

MALICIOUS

PDF

95.0 KB Created: 2021-03-23 22:40:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: fabde4be920ce821526cbe26652d6363 SHA-1: 2075ca5728a72c82a22039e5a51f0d6c38243e0f SHA-256: 80e9fe565b60dbae244ced6b86684d74aef9bd9f2f97c8b64de0cfed2ed149e3
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, a technique often used in link farms to manipulate search engine rankings or to host malicious content. The primary malicious URL, https://resalured.ru/strik?utm_term=brother+sewing+machine+sq9185+troubleshooting, is presented as a troubleshooting guide, indicating a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and the presence of external links strongly suggest it's designed to redirect users to malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://resalured.ru/strik?utm_term=brother+sewing+machine+sq9185+troubleshooting PDF link annotation
    • http://kixetojonomezad.22web.org/nawox.pdfIn PDF document text
    • http://kigimol.iblogger.org/dufolata.pdfIn PDF document text
    • https://lotaximadezepa.weebly.com/uploads/1/3/1/3/131379514/041c22.pdfIn PDF document text
    • https://xovotirepotu.weebly.com/uploads/1/3/1/4/131412955/7758908.pdfIn PDF document text
    • https://fafotarume.weebly.com/uploads/1/3/1/0/131069904/8608353.pdfIn PDF document text
    • https://lepifopinitomo.weebly.com/uploads/1/3/2/6/132696280/zegafenewibef.pdfIn PDF document text
    • https://rejejowurodesom.weebly.com/uploads/1/3/1/3/131398559/sodek.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://d8ec88ce-93b1-4b83-b294-7016fd5b5063.filesusr.com/ugd/366252_ddc31987dda24f29924f72df797eafae.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/puretulenuza/dawn_spelling_bee_word_list_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/visagogijulep/whirlpool_washing_machine_spare_parts_for_sale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11d0a61c-5a17-431a-a042-d86b7988551d/pandaria_flying_trainer.pdfIn PDF document text
    • https://s3.amazonaws.com/wuwabobujasivor/acrobat_x_standard_edit.pdfIn PDF document text
    • http://molitumulejoji.rf.gd/xasizanedu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a851312-09a2-4497-b091-8828bedf55eb/why_use_audacity.pdfIn PDF document text
    • https://de7eff9d-5c50-4122-bb99-ee112abf7a8f.filesusr.com/ugd/db8f21_f257de40692f43f8a91cd9b0660ab78b.pdf?index=trueIn PDF document text
    • https://88211235-bf86-4d40-a6ec-a052db2f682e.filesusr.com/ugd/94e5ef_0ed2c840333f4fa9b2f5b96680060072.pdf?index=trueIn PDF document text
    • https://aa514bbb-a96e-4bc9-8ff3-0ca2edd1104f.filesusr.com/ugd/3fc21f_bc2c096f0fa64aeeab310b0b94c0c1ea.pdf?index=trueIn PDF document text
    • https://b9a4c3d6-4ccf-4d04-9b0f-c2e9c357e15d.filesusr.com/ugd/e5cbe5_50f481ffbf234b97b6101cb46fc110aa.pdf?index=trueIn PDF document text
    • https://8772a198-af03-49ef-8724-5feb7546cb8a.filesusr.com/ugd/436f04_6ae58492dfd84121b7593b880c109255.pdf?index=trueIn PDF document text
    • http://zowonotetejubi.rf.gd/14860475805.pdfIn PDF document text
    • https://s3.amazonaws.com/zoxewudunigus/football_manager_2018_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cbc5252e-25d4-4540-8cb0-0e71c39fb719/how_long_is_ruud_water_heater_warranty.pdfIn PDF document text
    • https://9cc03a5b-da86-4a44-8f3d-15f7580f9586.filesusr.com/ugd/cac91c_d4821bbebaca4f13860d42a9f3fa9b79.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000125a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125A4 6028 bytes
SHA-256: 4c6812e027ecc96699484685a2a507dbdd36d114e9852dc8f0fe8259e90254f1
font_01_sfnt_off00013a0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A0E 11176 bytes
SHA-256: e3bcfa82a092897ac4e244f0dd43ca2e88f5d5ed2341e4774da839cf3bf216a2
font_02_sfnt_off00016025.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16025 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176