PDF malware analysis — malicious · 3d0c0d0d41d9a61b

MALICIOUS

PDF

76.6 KB Created: 2021-03-19 12:20:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30

MD5: 2ddcf3f219d8ef6232fc0bcdd70814d7 SHA-1: 390089dabb4833c21529c1cbd06a6abaade40145 SHA-256: 3d0c0d0d41d9a61b3b5b529541d316a78656e193abff026433bb5090fdd87dcf

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many of which are to benign-looking documents, but the primary URL `https://druttle.ru/wix?keyword=imu+stands+for+urban+dictionary` is suspicious and likely part of a link farm or phishing campaign. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution via embedded links.

Machine Learning

Nyx PDF Classifier malicious score 0.9989

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
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://druttle.ru/wix?keyword=imu+stands+for+urban+dictionary PDF link annotation
- http://mjawebdesign.net/how_do_i_get_a_publisher_to_read_my_book2lfyr.pdfIn PDF document text
- http://flash-sar.online/aircare_ma1201_whole-house_consolepxlkg.pdfIn PDF document text
- http://zatoboyvibor.fun/vivutr5l4u.pdfIn PDF document text
- http://granitmetrospecstroy.ru/what_does_a_g5_costlupjs.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/gezetega/digital_beamforming_in_phased_array_radar.pdfIn PDF document text
- https://57933e30-1e86-4cbe-ad2b-777cb72f9932.filesusr.com/ugd/235f1a_483571e316e144228cdf138383c9dde9.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/rizijubovapuk/ver_yo_amo_a_juan_querendon_capitulos_completos_online.pdfIn PDF document text
- https://s3.amazonaws.com/faduxodiwo/masked_singer_peacock_performance_all_of_me.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/74c7d733-e56b-4005-90b6-9ac13e002772/kingdom_man_tony_evans_free_download.pdfIn PDF document text
- https://s3.amazonaws.com/dazifozixawus/how_to_put_lg_sound_bar_in_pairing_mode.pdfIn PDF document text
- https://s3.amazonaws.com/bakoloj/apache_windows_64_bit_msi.pdfIn PDF document text
- https://5fb42ee6-a9be-400a-98f2-f9d4b9f720c8.filesusr.com/ugd/1813b3_0fe7e5f300f044cdb1bddfa95033061f.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/dexodekelaseki/story_saver_for_facebook_apk_uptodown.pdfIn PDF document text
- https://s3.amazonaws.com/nuxulikiwab/69126630306.pdfIn PDF document text
- https://s3.amazonaws.com/bagokiko/nukivade.pdfIn PDF document text
- https://s3.amazonaws.com/pizexopenaxu/advance_directive_sample_form.pdfIn PDF document text
- https://abbf68a8-5b21-4996-91be-11266bd273ed.filesusr.com/ugd/9374a7_f4e2644d33de43ec8eb4b8c7272fd57a.pdf?index=trueIn PDF document text
- https://091a8774-b5bd-4fb7-8799-8d1ca0ca44ad.filesusr.com/ugd/8716ab_38795e657b174770916d59705217510e.pdf?index=trueIn PDF document text
- https://d692b82a-d563-45ba-818c-0512d98079dc.filesusr.com/ugd/1c7397_2cd20e850d9a44ebb115807d4f33c329.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/2376940a-fe16-4137-b27d-aae275828512/gidolu.pdfIn PDF document text
- https://064d663d-f6b2-44cf-a6ad-083da5f315e5.filesusr.com/ugd/77eba6_2b12f359b405472a840cb91d503decbc.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/guwutivupudutu/pevivijatuw.pdfIn PDF document text
- https://944456f3-75eb-4cd6-bbfd-656b3713ada1.filesusr.com/ugd/2c8d66_7a694a39f7fc4d4c825fa4c79d63f7bf.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/5a73dcea-7640-48f7-82b6-33efb5d7e278/pifufijezun.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_off0000e068.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE068	5076 bytes
SHA-256: `92fc1fb99aac72d1d8a9c4f3c9020ff45cbb570307514d8f1cccc432b0691cbe`
`font_01_sfnt_off0000f186.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF186	10816 bytes
SHA-256: `127edae106ebb36bb75a1a5eb491f7d57a6e7075fb70e12a3f30ed8e705e4f36`
`font_02_sfnt_off00011699.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11699	4324 bytes
SHA-256: `4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3`

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