Malicious PDF — malware analysis report

Static analysis result for SHA-256 abcd0ca2607f94a1…

MALICIOUS

PDF

79.0 KB Created: 2021-03-05 03:49:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 133f3faa34651b94af8464d9d0722505 SHA-1: de120f157a7551124479ddf101b71d55d3daeabf SHA-256: abcd0ca2607f94a181d77f1275d79bd0811c378779633f07e6ca11f823915727
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous external links, with a significant portion pointing to link farms hosted on services like Weebly and MyArtsonline. The primary URL, 'https://fokemale.ru/strik?utm_term=why+won%2527t+my+dyson+work+on+new+carpet', suggests a phishing or SEO spam lure. ClamAV and ML heuristics also flagged the file as malicious, specifically as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://fokemale.ru/strik?utm_term=why+won%2527t+my+dyson+work+on+new+carpet PDF link annotation
    • https://burakatotofok.weebly.com/uploads/1/3/1/8/131871829/sisodawumifej_matepexuw_xamonikusun.pdfIn PDF document text
    • https://kigadipokifexi.weebly.com/uploads/1/3/0/8/130813079/vomataseme_mubiduf_bajaki_tarovi.pdfIn PDF document text
    • https://nejotadig.weebly.com/uploads/1/3/1/1/131164569/temagu-sovokere-gekegufajazix-lujuw.pdfIn PDF document text
    • https://gabejopow.weebly.com/uploads/1/3/4/5/134597712/lusizagi.pdfIn PDF document text
    • http://pawomodom.medianewsonline.com/apa_reporting_independent_samples_t_test.pdfIn PDF document text
    • https://walamemagiro.weebly.com/uploads/1/3/4/4/134441064/konumip-xekodejila-wiwamavabojogu.pdfIn PDF document text
    • https://foguvebosep.weebly.com/uploads/1/3/5/3/135315209/pesupiguzawi_nosavif.pdfIn PDF document text
    • https://wexemexaxixu.weebly.com/uploads/1/3/4/7/134709907/kizutugerig-wotuwike-powuvusunax-bikoroxilubasid.pdfIn PDF document text
    • http://potuxoposutu.medianewsonline.com/kojixuxavigisipewur.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fepetixapokurob.myartsonline.com/hayward_power-flo_lx_1.5_hp_above_ground_pump.pdfIn PDF document text
    • http://belibivizonojo.myartsonline.com/57610911868.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4484a0c1-f134-4051-a7cf-cbf778b1777d/object_oriented_programming_languages.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d93f743a-4f98-427e-a25b-e2f15861ccf6/85690619805.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/accelerazione_centrifuga_formule.pdfIn PDF document text
    • https://s3.amazonaws.com/bevekizadoxuj/32930307353.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a75b1fe0-378b-45cb-8131-b56e37ef90ab/how_to_calculate_the_mean_median_mode_and_standard_deviation_in_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/safukubagiwetoxetisalo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0832bd8-b8ce-42ca-be92-515cadf5f8bc/how_to_cite_a_case_study_in_apa_format.pdfIn PDF document text
    • https://s3.amazonaws.com/gafedupeba/kaththi_bgm_free_zedge.pdfIn PDF document text
    • https://s3.amazonaws.com/juvosi/bolorugulut.pdfIn PDF document text
    • https://s3.amazonaws.com/bolovopizonuki/wuvat.pdfIn PDF document text
    • https://s3.amazonaws.com/zufaxepixiguxax/molecular_geometry_worksheet_4.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f617.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF617 5588 bytes
SHA-256: 5a6b7669a0f04766e1ccc844a9f826c5acd630b3586004dbc67570a85ba54215
font_01_sfnt_off00010910.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10910 10796 bytes
SHA-256: 122d87d0a92ba1a4d26b139eb56125b852d820e6a1cacd63ef3c0083274cbaaf

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