Malicious PDF — malware analysis report

Static analysis result for SHA-256 4976e97ca2274a1d…

MALICIOUS

PDF

96.0 KB Created: 2021-03-14 23:48:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 993ec15d694c4cbbd90a46cb51ee159d SHA-1: 483e1879a4962fd079ad395d807739d39bd1a9f8 SHA-256: 4976e97ca2274a1d9cf0ff1a391200b175bb0438974e7f5eba13b4a7ab162edc
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which appear to be SEO-optimized for search terms related to downloads. The presence of a ClamAV detection for 'Pdf.Phishing.Trojan' and ML classification strongly indicate malicious intent. The primary goal seems to be directing users to external sites that likely host malware or phishing content, disguised as legitimate download sources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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://nipisod.ru/wix?keyword=download+pinger+apkpure PDF link annotation
    • http://galoomer.online/bushnell_telescope_model_78-9512_partsku9bu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404503/normal_5fd04658bc3af.pdfIn PDF document text
    • http://antonioit.space/740715660259m9n1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463287/normal_6031d69f283f1.pdfIn PDF document text
    • http://jisetatiloro.scienceontheweb.net/how_to_train_for_basketball_by_yourself.pdfIn PDF document text
    • http://about-igsupport.com/tuba_city_chapter_house6hjl2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373517/normal_60130768d5bf0.pdfIn PDF document text
    • http://sunazeremitiwu.mypressonline.com/2612399383.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389074/normal_604e6d3dc5d3c.pdfIn PDF document text
    • http://pinezotamex.getenjoyment.net/peter_pan_and_wendy_jm_barrie.pdfIn PDF document text
    • http://mapenibo.scienceontheweb.net/xelawo.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://s3.amazonaws.com/gosete/cat_and_dog_hollywood_movie_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/wupixufekijax/13439519388.pdfIn PDF document text
    • https://625f08e2-3d8e-45b5-8e8c-b95d001c5c7c.filesusr.com/ugd/d94ae5_6ea10eec81094a96ba3ca3d32f20f53e.pdf?index=trueIn PDF document text
    • http://wugerubuvugox.myartsonline.com/79286701720.pdfIn PDF document text
    • https://b32521b7-32ca-447e-9967-d27d0dce683d.filesusr.com/ugd/800b88_e516aa23ce5f4487b82bafafde655d0d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/ammi_pagal_ho_jao_ringtone.pdfIn PDF document text
    • https://s3.amazonaws.com/masevewi/anllela_sagra_diet.pdfIn PDF document text
    • https://s3.amazonaws.com/tuletivotarupu/71529955399.pdfIn PDF document text
    • https://c3a7a64c-5591-430b-94d7-c2eadfdf3523.filesusr.com/ugd/966478_13d02c099a5546baa97dece6e3ea7aa2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wizitifowubux/44695978871.pdfIn PDF document text
    • https://s3.amazonaws.com/kewuxejikiwe/offline_antivirus_for_windows_xp.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE41 3068 bytes
SHA-256: 34a2164b69dc857ad59f2bf8d002fcbf240beb772849d83f80a3c75426dc4711
font_01_sfnt_off0000e907.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE907 4908 bytes
SHA-256: 82a3cf8093b66e74800ecd889f1e3b1dabe39e8c4163ae196ee63e9bc7488af4
font_02_sfnt_off0000f98d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF98D 6340 bytes
SHA-256: 7928f6bfcacf4b8c2218b012f30d6a688f7d600c2bceec2598b03ee34226b8f3
font_03_sfnt_off00010919.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10919 7644 bytes
SHA-256: a934dc8004619a67f4fcbfcf84c52b3deee50664aadc24190b119b8f02be3d84
font_04_sfnt_off00012379.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12379 11336 bytes
SHA-256: 72a127320457d06c9321755cd4ac66300523e3f70a168fb8d8e40fc08ffadfa8
font_05_sfnt_off00014a77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14A77 17104 bytes
SHA-256: fd37491d33ff695a784563464f13563bcd7dd8f368288d2a0ea3684a03218074
font_06_sfnt_off0001629f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1629F 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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