PDF malware analysis — malicious · 6860c2637ce0eb05

MALICIOUS

PDF

77.1 KB Created: 2021-04-05 03:08:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23

MD5: a651ace1c25cef360763bc878a8aafa2 SHA-1: 0a94777461a171bfe177ed464850b8f3e7eb2eed SHA-256: 6860c2637ce0eb054beb5605174f64a2ed17f998e4237e156030d7a5fcf52398

194 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many hosted on disposable domains, indicating a link farm designed to obscure the true destination. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or distributing further malware. While no scripts were directly extracted, the PDF structure and link farm behavior are indicative of an attempt to trick users into downloading malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

Heuristics 7

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.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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 http://teksol.xyz/fexedevojapawuptxj7.pdf In PDF document text
- http://titanovyi-filtr.ru/fireboy_and_watergirl_2_cool_math_games37dl4.pdfIn PDF document text
- http://zoomita.fun/android_discussion_forum_app_abulletinoa6t0.pdfIn PDF document text
- https://cdn.sqhk.co/fekigimuzib/hjcggQ6/xujodeligaka.pdfIn PDF document text
- http://trikotoria.ru/canada_national_sport_organizationsve7g9.pdfIn PDF document text
- https://cdn.sqhk.co/matajikiwov/6GKig9t/two_guns_az_koa.pdfIn PDF document text
- https://cdn.sqhk.co/vibefoparo/XmegcWJ/zonaligejatiguwukif.pdfIn PDF document text
- http://getsol.xyz/bolakegaxaav.pdfIn PDF document text
- http://dreabling.online/william_shakespeare_sonnet_106_analysiskypv8.pdfIn PDF document text
- https://cdn.sqhk.co/lisutovudaf/hoXtjbw/burger_king_nyc_locations.pdfIn PDF document text
- http://jezolagewe.iblogger.org/sony_receiver_str-ks360_manual.pdfIn PDF document text
- http://nout-prodat.site/aladdin_movie_trailervs3et.pdfIn PDF document text
- https://cdn.sqhk.co/mojobugoge/K0icigc/lasopakemugegetixape.pdfIn PDF document text
- https://zefakibafiv.weebly.com/uploads/1/3/1/3/131383453/b718b657.pdfIn PDF document text
- http://letxxnx.org/day_by_day_planner_template9s5c1.pdfIn PDF document text
- https://kazuvamelu.weebly.com/uploads/1/3/0/7/130738637/goligukorajape-manofu-kojoporawaxovi-bipamozaxukubod.pdfIn PDF document text
- http://wdd13.ru/load_data_6mm_creedmoorazdy5.pdfIn PDF document text
- https://cdn.sqhk.co/kujotukil/0je2Bhc/game_capture_xbox_one_x.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
- http://feedproxy.google.com/~r/wb/ENAH/~3/0IJhScypsXo/wb?keyword=hp%20elitebook%208560p%20fingerprint%20driverPDF link annotation
- http://jikapepikedamum.epizy.com/vavofasoka.pdfIn PDF document text
- http://jivirazi.epizy.com/nufegikoni.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e200.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE200	5448 bytes
SHA-256: `c8b9c1b5aaac1ac4795ce4f24fbe8ca7b49d810c1174db8c3ae9a543d65e03e9`
`font_01_sfnt_off0000f492.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF492	10580 bytes
SHA-256: `7ab328881290638667926038c7d9826a67df76ab199e25c3cfc95f4c0e48ecaf`
`font_02_sfnt_off000118d6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x118D6	4324 bytes
SHA-256: `a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f`

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