PDF malware analysis — malicious · 47e5f48b91bdbbf0

MALICIOUS

PDF

81.6 KB Created: 2021-06-09 16:22:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13

MD5: 33bd73c1fdf428795b306be601638b57 SHA-1: d00543905093df9cd9b7beb8f922b4d031c2c2a8 SHA-256: 47e5f48b91bdbbf0dc9744f4d0a216e6e14a704edd31d6bcf02c1cdee5a0c3e5

186 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 are hosted on disposable domains, indicating a link farm designed to drive traffic to potentially malicious sites. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the presence of numerous external URLs and the heuristic findings point towards an attempt to redirect users to harmful content.

Machine Learning

Nyx PDF Classifier malicious score 0.9082

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
PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED

The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
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://pistant.ru/pbw?utm_term=oru+iyakkunarin+kadhal+diary+movie+tamilgun PDF link annotation
- https://cdn-cms.f-static.net/uploads/4368996/normal_60484b6bb8d2b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4455886/normal_602e285c3d775.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4410217/normal_602a37d58a177.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4411218/normal_60b80dfc97ddf.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4481520/normal_5ffa2b7b7c356.pdfIn PDF document text
- https://duvirimak.weebly.com/uploads/1/3/4/6/134603536/2956009.pdfIn PDF document text
- https://tedaliduvif.weebly.com/uploads/1/3/5/9/135957254/rimut.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4427781/normal_60317747eb328.pdfIn PDF document text
- https://static.s123-cdn-static-d.com/uploads/4421049/normal_60b317ee02d4a.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4402948/normal_5ff52965d478a.pdfIn PDF document text
- http://fedorahosted.org/lohitIn 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/d905e3d8-d6a2-4f8a-b537-619394e94092/90365367749.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/8fa69cc1-f047-46de-829d-4298389014a6/58888380103.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1b86f0b4-6856-4f74-85c8-c193e1715c4d/zufajefimekejigixa.pdfIn PDF document text
- http://wojoxevom.pbworks.com/f/productos_notables_formulas-trinomio_al_cubo.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/edf29d4d-ab6d-4201-ae7e-22f876f53255/how_to_clean_carburetor_on_husqvarna_lawn_mower.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/82d567e5-8970-45db-b781-ada316e33a96/tuxuburigokadasimed.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/0692c90d-ce49-4266-89d0-970af66ae0ea/bowie_knife_fighting_techniques.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ea4d597f-30e6-47a5-be06-4bf44af966ac/hamilton_beach_49976_flexbrew_2-way_coffee_maker_-_black.pdfIn PDF document text
- http://pajinap.pbworks.com/f/xogepazosatigutawuseragig.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/fbe67cd3-1ae4-4093-955f-81ee781b5c01/lidorevipuzik.pdfIn PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off0000f4ff.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0xF4FF	17504 bytes
SHA-256: `f87bac9dabbb06e7043e143a7e5b18a7cadeeead43e958cd7e0953277f094419`
`font_00_sfnt_off0000e30b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE30B	5316 bytes
SHA-256: `1b6eb78c914ea0cfaf3891a002436162bfad7c95e031b703ff82fab2ef844d78`
`font_02_sfnt_off00011cf6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11CF6	11728 bytes
SHA-256: `9162eae25c286bcb164f63af5136f5b713ef9da514d7bb8ae088a275a87bdf1c`

Open this report in the interactive analyzer, or submit your own file for analysis.