Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ff0a570bc2d7fb5…

MALICIOUS

PDF

70.9 KB Created: 2021-03-01 10:54:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 58e39919ba36e4a00ed4a374843e3ef6 SHA-1: 64d5953a6de6bbd1429110c101075fdf6bf71798 SHA-256: 9ff0a570bc2d7fb5ac7341f1fdfa38f0890df7293a1fe3f489580ef980b4e594
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://fokemale.ru/award?keyword=how+to+use+rug+doctor+pro+attachment PDF link annotation
    • https://sobepaded.weebly.com/uploads/1/3/4/3/134305425/jikisasuz.pdfIn PDF document text
    • https://cdn.sqhk.co/vakiduju/xHjjaVV/artillery_meaning_in_malayalam.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385026/normal_5ff1d18a8afff.pdfIn PDF document text
    • https://cdn.sqhk.co/fekawifen/zNKJjb4/bubble_cat_rescue.pdfIn PDF document text
    • http://lugabev.mygamesonline.org/black_and_decker_bm3b_charge_time.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418000/normal_602e512a626af.pdfIn PDF document text
    • https://kurenilomu.weebly.com/uploads/1/3/4/0/134042522/6446899.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427097/normal_6001efbf41594.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409630/normal_6019f63a22085.pdfIn PDF document text
    • https://lupudeme.weebly.com/uploads/1/3/1/3/131378919/juwozutidotosogag.pdfIn PDF document text
    • https://vepibasizux.weebly.com/uploads/1/3/1/3/131380915/5928453.pdfIn PDF document text
    • https://jasemoluzisad.weebly.com/uploads/1/3/5/9/135968146/vakufepa.pdfIn PDF document text
    • https://nejalebemenogun.weebly.com/uploads/1/3/1/0/131070187/1847196.pdfIn PDF document text
    • http://tesodip.iblogger.org/anime_mobile_ios_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://badememaveg.rf.gd/sm_bus_controller_driver_windows_8._1.pdfIn PDF document text
    • http://ferozar.rf.gd/tofuga.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_off0000d9d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9D7 5508 bytes
SHA-256: 7c874cc70b1f6982fe4ffc13f1a920a88b4c7ec5c6c13ee6cd46b4d177d4f4c5
font_01_sfnt_off0000ec78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC78 10024 bytes
SHA-256: 7d758b351c4831d70ccdb5110df044567278b21c6d802b9d030214c84d08f298