Malicious PDF — malware analysis report

Static analysis result for SHA-256 adcaebd8bcef4b84…

MALICIOUS

PDF

79.0 KB Created: 2021-03-09 12:47:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: dba59763ef08f6af4c5e5880d6e4e023 SHA-1: b37e5ea4351ee9db2867a3761b82a617e71cc0d7 SHA-256: adcaebd8bcef4b841785cb6b7d50b1f6ac0201ba1d6df6a6f450a65e1676dfa0
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://resalured.ru/award?keyword=advanced+agility+ladder+drills+pdf PDF link annotation
    • http://megantv.site/the_shining_book_review_age_appropriatekygwp.pdfIn PDF document text
    • https://fizabogozof.weebly.com/uploads/1/3/2/8/132815807/7563725.pdfIn PDF document text
    • http://bilkan.fun/chicco_keyfit_infant_car_seat_basevcfam.pdfIn PDF document text
    • http://moitender.org/tr_movies_tamil_dubbed_movie32m16.pdfIn PDF document text
    • https://fiziwiminika.weebly.com/uploads/1/3/4/6/134686918/josadedugajidop.pdfIn PDF document text
    • https://xuxukiworizep.weebly.com/uploads/1/3/4/7/134723333/nurilope.pdfIn PDF document text
    • http://shishkin-seed.xyz/topisugimidafimu7478w.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwunikuneg/ijjfgcX/industrial_factory_near_me.pdfIn PDF document text
    • http://copyright-services-us.com/cholesterol_guidelines_for_type_2_diabetespiq1z.pdfIn PDF document text
    • https://xisiwazebisa.weebly.com/uploads/1/3/4/7/134758569/0979382a83.pdfIn PDF document text
    • http://tewatag.medianewsonline.com/dajufamifexemadopusu.pdfIn PDF document text
    • http://zaxevef.getenjoyment.net/toro_51619_ultra_electric_blower_vac_reviews.pdfIn PDF document text
    • https://rukuzidin.weebly.com/uploads/1/3/4/5/134517246/82239ab38ad7c9.pdfIn PDF document text
    • https://cdn.sqhk.co/perikowep/cggxgfM/java_adventure_maps.pdfIn PDF document text
    • http://jidapuxedepu.medianewsonline.com/parokix.pdfIn PDF document text
    • https://zinuwikisabarek.weebly.com/uploads/1/3/4/6/134679236/8be271a75eb.pdfIn PDF document text
    • https://nipawivas.weebly.com/uploads/1/3/2/6/132680981/c670574c7.pdfIn PDF document text
    • http://tujidal.mypressonline.com/70978424528.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://wotidupodugi.myartsonline.com/annie_john_book.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.

FilenameKindSourceSize
font_00_sfnt_off0000eafe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAFE 5152 bytes
SHA-256: 2c1b1b846647341636ec50328d1357e7eb0c246a9694a2f1a54a3c8e19883a19
font_01_sfnt_off0000fc99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC99 10564 bytes
SHA-256: 0a60fd915a0088ef271526c76c05f735cfcef1e0a2b53ad4c061c319384316b5
font_02_sfnt_off000120b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120B2 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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