Malicious PDF — malware analysis report

Static analysis result for SHA-256 174fe95801e16b80…

MALICIOUS

PDF

81.7 KB Created: 2021-03-28 09:57:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 73370a0f1783ff86b1a9a4d932a5a87b SHA-1: 95680975128ae1df6f8dc7bcf127ea493567b3dd SHA-256: 174fe95801e16b8024aea09b19471084a0b9ad006224947018ee8e5a48dc317b
186 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 0.9993

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://druttle.ru/wix?keyword=percy+jackson+sea+of+monsters+movie+google+drive+mp4 PDF link annotation
    • https://fuwamelewupo.weebly.com/uploads/1/3/4/1/134131589/7062809.pdfIn PDF document text
    • https://xakivemo.weebly.com/uploads/1/3/0/7/130739368/30b49.pdfIn PDF document text
    • http://leftoutclub.com/what_do_you_meant_by_management_styleyk8lj.pdfIn PDF document text
    • https://tavifarexup.weebly.com/uploads/1/3/4/6/134611028/ropawekipojowa_puwotozofumoteb_jiboxexilof_nojofirodoloku.pdfIn PDF document text
    • https://viwefinorix.weebly.com/uploads/1/3/0/8/130813514/sumuwufudimup_mubipasamo_dixuzegivi_wuvubew.pdfIn PDF document text
    • http://show-visitor.xyz/xetaww4a4n.pdfIn PDF document text
    • https://xezamojukugenu.weebly.com/uploads/1/3/5/3/135316948/e942e9382017f8a.pdfIn PDF document text
    • https://vovepelit.weebly.com/uploads/1/3/5/3/135325097/e423a4484b.pdfIn PDF document text
    • http://canonsburglake.com/iron_deficiency_anemia_thesismugzo.pdfIn PDF document text
    • https://fazodokivev.weebly.com/uploads/1/3/4/0/134018208/63de61ffadba961.pdfIn PDF document text
    • http://pitushok.fun/browning_micro_adrenaline_compound_bow_manualtw3of.pdfIn PDF document text
    • http://vuvuga.xyz/plato_symposium_bahasa_indonesiasqray.pdfIn PDF document text
    • http://kdghy.online/bitmoji_classroom_backgrounds_gymez1b5.pdfIn PDF document text
    • http://copyright-helps-team.com/loxobeb401s0.pdfIn PDF document text
    • https://fifitedogij.weebly.com/uploads/1/3/4/7/134747960/995ec037.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e86ae0c4-7989-46f6-b792-2d918010797d/why_is_my_hotspot_not_working.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fce16de-ef0f-4610-8cdc-20ba65f4edbb/96614453259.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1be67b48-bc06-4c39-b2e6-8f594eb23ad1/sunbeam_bread_machine_model_5891_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b2ec4d0-69de-422f-848a-0b5b8048f5cf/scotts_speedy_green_2000_settings.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fddd3545-6583-48b6-b604-6bd3b56e89f4/let_us_chase_the_squirrel_lyrics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32ef47f5-8302-4039-a20e-6198d78dba92/nolowadidegoxilojozim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec71f1b9-948f-43dd-8b09-c1fde0fd81c7/zezedetutozagifotebakorin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77a09f93-4955-41fd-9af3-9237723a4d1f/how_do_i_set_up_wifi_on_my_alexa_dot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cb16ee3-fcf1-4299-b058-21316b988007/scikit_learn_tutorial_youtube.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fc83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC83 5864 bytes
SHA-256: 33a4522f9a16d184c7044bfb1f86cf72d8d2f945fb9a5a5f685d76b678b40abf
font_01_sfnt_off00011089.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11089 12160 bytes
SHA-256: 3cda3fa5add070a7c28900a399b3f8a56ff2cc0b67942cd7875ad927daf0aaa3