PDF malware analysis — malicious · 1a6648aa81974ff9

MALICIOUS

PDF

80.8 KB Created: 2021-04-16 22:10:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24

MD5: a02fa6bf3599950d8432d4cfbb8393f3 SHA-1: 5aa66377bd067c188325cc02b863643074a66724 SHA-256: 1a6648aa81974ff9930a17e078be5feae0ada2f6ead1a7548a3566b405550c42

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains heuristics indicating it is a phishing document and hosts a link farm of external PDFs. It embeds a URL that appears to be part of a phishing lure related to training benefits. The ClamAV detection and ML classifier strongly suggest malicious intent, likely to redirect users to malicious content or download further payloads.

Machine Learning

Nyx PDF Classifier malicious score 0.9954

Heuristics 5

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.
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://xezojetit.ru/strik?utm_term=iso+22000+lead+auditor+training+benefits PDF link annotation
- https://cdn.sqhk.co/bitaxukezor/50Eg2Oo/14886276108.pdfIn PDF document text
- https://cdn.sqhk.co/raserijene/ibidgih/jevovikapunemaluzut.pdfIn PDF document text
- https://cdn.sqhk.co/zogobadakedu/hhhhngi/cinergy_theater_amarillo_tx.pdfIn PDF document text
- https://cdn.sqhk.co/sivadapexiri/IjegfsS/82539232952.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4403560/normal_5fe787c86a465.pdfIn PDF document text
- https://cdn.sqhk.co/guwewaxa/iqjiigR/2020_land_rover_defender_interior_colors.pdfIn PDF document text
- https://cdn.sqhk.co/bupewazadufa/ec2MAed/towem.pdfIn PDF document text
- https://cdn.sqhk.co/nomelafu/ChjaNTo/sanicondens_condensate_pump.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4391893/normal_5fd084f1e4a09.pdfIn PDF document text
- https://cdn.sqhk.co/potebuso/ghchaxB/18218302757.pdfIn PDF document text
- https://cdn.sqhk.co/tivinarafuvu/ijegi7F/reloxufizadexanarogego.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4475563/normal_6051576a21d24.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4485695/normal_6067fd507de3d.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/jovekus/29111043111.pdfIn PDF document text
- https://aed022ca-8a9d-452d-9022-56a74a585a14.filesusr.com/ugd/4d548e_53d7e923c1814459bd61b85800cfa7ed.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/zalomi/bomgar_jump_client_windows_10.pdfIn PDF document text
- https://be56f97b-0727-4a8e-a141-4155b83e75ac.filesusr.com/ugd/5034d0_dc6605a591da4be48af9d0efc115de4a.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/gavobawum/64130732136.pdfIn PDF document text
- https://b3709dad-42f4-4621-9b7e-74d31ca978cd.filesusr.com/ugd/f91cf1_8086375157f843e7ba4c13826c6b4386.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/gidibesuxi/space_place_and_gender_identities_develop_pre-600_bce.pdfIn PDF document text
- https://s3.amazonaws.com/masevewi/22._how_many_chickens_would_it_take_to_kill_an_elephant.pdfIn PDF document text
- https://413f70bc-0247-4a04-a3fc-eabb14e2b93f.filesusr.com/ugd/f18ee6_b1088b3adeab4fefb66673be3180e7e5.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/zurovajij/instagram_photos_high_res.pdfIn PDF document text
- https://s3.amazonaws.com/dagasopones/14284148056.pdfIn PDF document text
- https://s3.amazonaws.com/dorobukasawituw/unitypoint_clinic_express_morton.pdfIn PDF document text
- https://s3.amazonaws.com/temujonuwu/numerical_approximation_methods_harold_cohen.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_off0000ef39.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEF39	5308 bytes
SHA-256: `cf676056fd6113dd2e49ce9cafbe6a35087add7507832a7c6f5e2da4bd7db70d`
`font_01_sfnt_off00010141.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10141	11092 bytes
SHA-256: `37eac50e46c36cf62cf748972ecf8f84c998e8464cda53a24d466e4ecef060de`
`font_02_sfnt_off00012722.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12722	4324 bytes
SHA-256: `a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f`

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