PDF malware analysis — malicious · d723f431a8f6df66

MALICIOUS

PDF

106.6 KB Created: 2021-02-17 17:06:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27

MD5: 17b396fc7fdf4518ae044f042b0981ef SHA-1: 933b1640b9bdfd179e498bf46fc30723e4970193 SHA-256: d723f431a8f6df66f4928d13c7f2153ecb8d22bd08089d8e67e88209cce28f86

214 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded links, with at least one pointing to known malicious redirector infrastructure. The document body, though partially corrupted, suggests a lure related to 'Sports Illustrated swimsuit edition 1985', likely to entice users to click on the malicious links. The presence of many external PDF links also suggests a link farm or SEO poisoning tactic.

Machine Learning

Nyx PDF Classifier malicious score 0.9995

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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.
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://yafferge.ru/strik?utm_term=sports+illustrated+swimsuit+edition+1985 In PDF document text
- https://womazineput.weebly.com/uploads/1/3/4/8/134895737/xiperesasavar-tarexebodo-xamesulovopi-bovifogazitif.pdfIn PDF document text
- https://vozabamoz.weebly.com/uploads/1/3/5/9/135959881/3623690.pdfIn PDF document text
- https://rasisepuwefu.weebly.com/uploads/1/3/4/6/134678142/kobelewuzez_fefavevo_zowax.pdfIn PDF document text
- https://gumewutudeg.weebly.com/uploads/1/3/0/8/130813982/puwefeke.pdfIn PDF document text
- https://gidixolatuloxag.weebly.com/uploads/1/3/1/0/131071157/4595429.pdfIn PDF document text
- https://zabokibijeg.weebly.com/uploads/1/3/5/3/135350751/mexuratifodagekederi.pdfIn PDF document text
- https://mubafuzolifuben.weebly.com/uploads/1/3/4/6/134644730/8633992.pdfIn PDF document text
- https://vebajixumese.weebly.com/uploads/1/3/4/4/134483039/46a8e6f20036.pdfIn PDF document text
- https://pimefukidipobe.weebly.com/uploads/1/3/4/0/134096137/jerusojasokowize.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/wuniku/guinea_conakry_country_report.pdfIn PDF document text
- https://s3.amazonaws.com/sigobija/mejaxekusumafafubetave.pdfIn PDF document text
- http://xifusejikudit.rf.gd/medical_receptionist_job_description_template.pdfIn PDF document text
- https://s3.amazonaws.com/ladiwuzetawedi/miracle_worker_by_glowreeyah_braimah.pdfIn PDF document text
- http://bosirizowu.rf.gd/java_scanner_bufferedreader_performance.pdfIn PDF document text
- https://s3.amazonaws.com/megujobemegor/wagipalesesapemit.pdfIn PDF document text
- http://zukavinu.rf.gd/octavia_butler_parable_of_the_sower_sparknotes.pdfIn PDF document text
- https://s3.amazonaws.com/fidefofudi/auto_format_php_notepad.pdfIn PDF document text
- https://s3.amazonaws.com/wiwamoxamo/bsc_flyback_transformer_datasheet.pdfIn PDF document text
- https://s3.amazonaws.com/batiku/54634105224.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0001399b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1399B	5708 bytes
SHA-256: `826709474a921068f9532d3ebdb6c41a7e56775538962aa0269f8000446b8dd6`
`font_01_sfnt_off00014d00.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14D00	14064 bytes
SHA-256: `388724d12ae2cb70f77c3e29281984fd4faac9311730feecb7d860f0ce2deb0d`
`font_02_sfnt_off000178cb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x178CB	16204 bytes
SHA-256: `532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e`
`font_03_sfnt_off00018dfb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x18DFB	4324 bytes
SHA-256: `b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c`

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