Malicious PDF — malware analysis report

Static analysis result for SHA-256 848f119ac948c9a5…

MALICIOUS

PDF

68.0 KB Created: 2021-03-09 07:28:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 89fb01c293bcac0622c8fcc0f5c1f0c7 SHA-1: 120896cf50e054a58d40121463c1176bd15ee8cf SHA-256: 848f119ac948c9a5f7756ef0287eb177da88b2bc484e5b1d696424b18da60634
156 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9998

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://zajinet.ru/wix?keyword=pixel+chix+app PDF link annotation
    • https://cdn.sqhk.co/pasededi/dGi7Yhb/wamepiroxapal.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457302/normal_602da6d02e79e.pdfIn PDF document text
    • https://cdn.sqhk.co/pemenodisoda/ic4VZic/abcd_2_full_movie_720p.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412588/normal_600b4a46a3f2c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://fa886832-b9e3-4ce5-a98c-97da2614721f.filesusr.com/ugd/9f8050_beb020e235f84b73ac8d6960a0f2e649.pdf?index=trueIn PDF document text
    • https://911f1565-2faa-4874-b261-330d521e7362.filesusr.com/ugd/f46427_6030a05e3d6e403a8e59105b52703e61.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/sony_dcr-trv280_reinsert_cassette_error.pdfIn PDF document text
    • https://s3.amazonaws.com/pazovugal/vigokuxizepox.pdfIn PDF document text
    • https://s3.amazonaws.com/libowebujakux/the_borrowers_1997_full_movie_free.pdfIn PDF document text
    • https://a29d81ee-e589-4368-99bd-4e0be04eb4c0.filesusr.com/ugd/a89e6e_7941d960966c4a24aff28d386f01653a.pdf?index=trueIn PDF document text
    • https://8316a071-1c81-4729-bbc9-bb84f51c1359.filesusr.com/ugd/b2ba6b_abfd825916104d7ea25d6a1a08b2d303.pdf?index=trueIn PDF document text
    • https://4eff3ec4-d147-45d1-be73-876d9e1d0019.filesusr.com/ugd/efb3f0_75ed19e7d60845c8beb6e97373c4641f.pdf?index=trueIn PDF document text
    • https://73856814-13bb-4d44-aeaf-752cce6ba6bd.filesusr.com/ugd/a0d21a_cf630c8e4f7c41499bb7fe532261a2a7.pdf?index=trueIn PDF document text
    • https://7fca5364-97a1-4441-b76e-d2c429a59218.filesusr.com/ugd/735424_9d0f2a0659f64d829290cdb3c68d4a71.pdf?index=trueIn PDF document text
    • https://aa5f33e9-793b-4807-a257-9eac84d314d0.filesusr.com/ugd/aa57b2_7dd2eb53fe704a20955b583911a3adb7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/damerirazib/hezekiah_walker_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/lovetijif/ffxiv_carpenter_fast_leveling_guide.pdfIn PDF document text
    • https://3d7304b5-8527-495f-b913-615d6f357a43.filesusr.com/ugd/ef7486_83658db7e4d9457f9063a0a87d0750c4.pdf?index=trueIn PDF document text
    • https://2a984544-7cb8-4a4d-9f60-e686f7994e39.filesusr.com/ugd/1434d3_2ea6df1da36f43228bd9d86b5dcdf072.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

Related samples 4

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d0ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0EA 4816 bytes
SHA-256: 7ef9fcabd5871f9ea15e2cc6362db769459d43ba094d68a0c6b395cd051f27a8
font_01_sfnt_off0000e154.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE154 9864 bytes
SHA-256: 68172aad2811b13f64f7f47c782de984ebce6e27a26bb5cd95c48cbb17f3f9c4

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