Malicious PDF — malware analysis report

Static analysis result for SHA-256 52ceeb6af48ea3f2…

MALICIOUS

PDF

108.5 KB Created: 2021-03-22 07:54:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e5280accda989446662d776773f0090f SHA-1: d8acb92091dbb6d6a02f1ab38b4f3c760d0d8ee1 SHA-256: 52ceeb6af48ea3f22657de3635169d927c8022453216266f0deebf6a48552abc
156 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains numerous external links, including a link farm heuristic firing, suggesting an attempt to redirect users to malicious sites. The presence of embedded URLs and the overall structure point towards a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://nipisod.ru/award?keyword=awpl+business+plan+pdf
    • http://youralteragoods.com/ranarutudufosonalixtps7d.pdf
    • https://zapamapat.weebly.com/uploads/1/3/0/7/130775391/2320342.pdf
    • http://reduslimitalia-official.site/50094048405cptta.pdf
    • http://ita-bio.fun/transition_word_activities_for_2nd_gradedkw2e.pdf
    • https://fusemikak.weebly.com/uploads/1/3/4/6/134649426/noseto_diwenavazarotu_fomefesevetijoz.pdf
    • http://rivepozepuxar.mywebcommunity.org/bohemian_rhapsody_piano.pdf
    • http://blankid.ru/walmart_near_me_black_friday5aa0j.pdf
    • https://rusuligoxajikug.weebly.com/uploads/1/3/4/3/134399392/9820386.pdf
    • https://cdn.sqhk.co/biluvetizom/cgdijp3/spinner_gun_targets.pdf
    • https://xatevixi.weebly.com/uploads/1/3/4/6/134651360/6039727.pdf
    • http://eeeeeyyy.space/comptia_security_sy0-501_test_questions68g5o.pdf
    • https://tutofegabosig.weebly.com/uploads/1/3/4/7/134725810/modiberer_dojid.pdf
    • https://cdn.sqhk.co/nilulugaj/wjfjhjf/kiper.pdf
    • https://lepoboniw.weebly.com/uploads/1/3/0/9/130969744/kafakerep_kizefawobudagol.pdf
    • https://cdn.sqhk.co/kolokejo/Wji7YaR/ivan_the_terrible_movie_disney_plus.pdf
    • https://patoduwewoz.weebly.com/uploads/1/3/1/4/131483118/8619863.pdf
    • https://bodarisijusafu.weebly.com/uploads/1/3/5/3/135383154/meripatefuferebofa.pdf
    • https://sejevijuwev.weebly.com/uploads/1/3/2/7/132712154/82cab4260282.pdf
    • https://cdn.sqhk.co/nugubirudif/ghjaBic/72317023468.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • http://pojozija.onlinewebshop.net/36764666249.pdf
    • https://201a0bc5-0eb3-4135-8969-828875a6b07d.filesusr.com/ugd/607883_af2afb8a7aec4d0cb0e2bb1247f7ea80.pdf?index=true
    • https://0eaabcdb-938a-45a6-85a3-1a7d796bbcdd.filesusr.com/ugd/8d6d25_1f99cfdecf8f43859b54e08b8765f16c.pdf?index=true
    • https://9a1eab6f-da2d-4a41-99bb-18a59f11b130.filesusr.com/ugd/c2b690_79f4b351313148de8a832abe74b73505.pdf?index=true
    • https://05f6fcc2-a4c7-4d5b-b58c-97b640a93f4d.filesusr.com/ugd/74147a_50e67b5323b9440d86229354af7c53e6.pdf?index=true
    • 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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNU
    • http://www.gnu.org/copyleft/gpl.htmRegular

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012fbd.bin
2763a1dfb83d9242a612b52b04a7493ec477bb5848079c16d16a44ea9833c942		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12FBD 5160 bytes
font_01_sfnt_off00014168.bin
a7c194c348f4bc26aad06ae1fa1eadf76503a3aca856ff80314c3d87a816eea9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14168 3720 bytes
font_02_sfnt_off00014cc8.bin
3f9a5104614c251b8a36291353dd5ed14aa623c605a98e3c099b7a88aebb0cd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14CC8 11044 bytes
font_03_sfnt_off00017285.bin
023964f856d89cb0bfe1617000f777edc387d02f6a00a8403812e9069c69ff7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17285 17372 bytes

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