Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8861d70091af916…

MALICIOUS

PDF

128.8 KB Created: 2021-03-24 11:27:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 8a9c67c669217b280d1c434c5cafb877 SHA-1: 55cdb2a19a275a93b66d08ac946540e14c01745a SHA-256: d8861d70091af916a456c6ef13d0a35c7181bf3012f3998747e7343115bb5a6b
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://lozipotod.ru/123?utm_term=catalogo+avon+campa%25C3%25B1a+14+2019+pdf PDF link annotation
    • http://sekelenogake.getenjoyment.net/11870248109.pdfIn PDF document text
    • http://pop-marketplace.ru/jofenlvdni.pdfIn PDF document text
    • http://verifybadgesbusiness.com/blackfin_walkie_talkie_user_manual4pxdb.pdfIn PDF document text
    • http://instapresent.site/schlage_camelot_handlesetspxd7.pdfIn PDF document text
    • http://huaweistoreukr.xyz/what_do_you_understand_by_food_chain_and_food_web62mp2.pdfIn PDF document text
    • http://microbladingcertificationdfw.org/ion_block_rocker_bluetooth_not_turning_on1o546.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
    • http://kapirexazi.onlinewebshop.net/6871434347.pdfIn PDF document text
    • https://s3.amazonaws.com/wupagivoz/xijokasedesonus.pdfIn PDF document text
    • http://lufafutogixafu.rf.gd/is_data_science_easier_than_computer_science.pdfIn PDF document text
    • http://jozomituj.epizy.com/sony_str-dh520_receiver.pdfIn PDF document text
    • https://s3.amazonaws.com/galinikagopit/23157065439.pdfIn PDF document text
    • https://8d59741e-369e-44be-b01e-8fbcb09d2d01.filesusr.com/ugd/7cefa9_b0279f492d66461390db3536141fe317.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xoguwavosuje/larudirofuloxuk.pdfIn PDF document text
    • https://s3.amazonaws.com/vavejijitatofu/sql_server_2018_express_edition.pdfIn PDF document text
    • https://3568ea06-17fa-4787-91ae-86b9aa918cbd.filesusr.com/ugd/8ade13_ac0cb4fd6ebc4af0856148b031a46147.pdf?index=trueIn PDF document text
    • https://0502d5d0-a0f5-47b8-bc1c-644c46e4e431.filesusr.com/ugd/6cabbb_9327f0933ac542469a7d0226404e327e.pdf?index=trueIn PDF document text
    • http://sorisavitekinuj.onlinewebshop.net/circuit_of_culture_model.pdfIn PDF document text
    • https://944bcc21-9f45-42c2-9889-8cf837fa5d1c.filesusr.com/ugd/50f869_085df5c90dca4198bcca6712c7bcc589.pdf?index=trueIn PDF document text
    • http://vapelokalun.epizy.com/how_to_use_a_mini_waffle_maker.pdfIn PDF document text
    • http://vuzuwukef.atwebpages.com/how_many_quarts_of_oil_does_a_scag_turf_tiger_take.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/82103760469.pdfIn PDF document text
    • https://s3.amazonaws.com/kozewuposoridil/netacad_chapter_8_exam_answers_2018.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001a99e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A99E 5688 bytes
SHA-256: 32708e69ecdca663ca4cae10d8702b569d5d4b6285655eafe950eb48ba2a862c
font_01_sfnt_off0001bcc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BCC6 12204 bytes
SHA-256: d0caf2ff35b9ac28ab2b8c598c21f2a39af22477fbe06fe1ceba9446b1aae378
font_02_sfnt_off0001e448.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E448 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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