Malicious PDF — malware analysis report

Static analysis result for SHA-256 36d012e6b019d501…

MALICIOUS

PDF

75.2 KB Created: 2021-03-13 23:53:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 68e27600423495b4aa63659d712155a9 SHA-1: 8f8fe030e58f1c76b9585858ef1162f21321b5f9 SHA-256: 36d012e6b019d501731caa4ee392e764475198d587e6731d4c0ed5abf4250776
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 disguised as SEO content, indicating a link farm or redirection scheme. The primary URL, 'https://botokaw.ru/strik?utm_term=how+do+you+restore+an+iphone+without+a+computer', suggests a lure related to iPhone data recovery, likely leading to a phishing or malware distribution site. ClamAV and ML heuristics confirm the malicious nature of the PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://botokaw.ru/strik?utm_term=how+do+you+restore+an+iphone+without+a+computer PDF link annotation
    • https://cdn.sqhk.co/ropobemuma/hhis3ie/alan_walker_hit_songs_list.pdfIn PDF document text
    • https://cdn.sqhk.co/geruxibab/iGZhehh/lageserufapudoxidafonu.pdfIn PDF document text
    • https://cdn.sqhk.co/dikapagoloza/s4Vhjuu/xarufesotudax.pdfIn PDF document text
    • http://axecheat1.xyz/free_online_slots_to_play_nowl9ook.pdfIn PDF document text
    • http://sbrf.link/what_happened_in_1900_to_1910ie3dy.pdfIn PDF document text
    • http://dokazutulome.22web.org/84717271022.pdfIn PDF document text
    • http://nasporte1.fun/27806934232nst33.pdfIn PDF document text
    • http://stopnutristrike.ru/best_magpul_ar_15_accessories3eetv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/goneduzum/vibirarawenut.pdfIn PDF document text
    • https://s3.amazonaws.com/guwutivupudutu/2090574747.pdfIn PDF document text
    • https://s3.amazonaws.com/bitizopovopaso/50575756145.pdfIn PDF document text
    • http://jezagap.epizy.com/zuniwepoxa.pdfIn PDF document text
    • https://s3.amazonaws.com/jepavilutabilel/kagaperilapalowuwu.pdfIn PDF document text
    • http://wutodabegaf.epizy.com/dbt_training_manual.pdfIn PDF document text
    • https://ae0ecf71-49bb-4ac4-bba4-d0f2a20d1af9.filesusr.com/ugd/668a47_22feecdcc1f547d0abd9044e3253f31c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xulepiwa/ssc_stenographer_2018_vacancy.pdfIn PDF document text
    • https://s3.amazonaws.com/ropidadegaxut/predicative_and_attributive_adjectives_worksheet.pdfIn PDF document text
    • https://5c839259-519f-4cee-a1a2-6639d654070b.filesusr.com/ugd/140efa_4bd230c179824ec68475833ddd01e12a.pdf?index=trueIn PDF document text
    • http://rufuregebedus.rf.gd/gevumelikewupupapututeveb.pdfIn PDF document text
    • https://s3.amazonaws.com/vovuzize/romeo_y_julieta_vintage_cigar_review.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/nasenuzosawuberifasena.pdfIn PDF document text
    • https://9fbaa0db-fe9e-443e-b503-3d02ea494c21.filesusr.com/ugd/d417e9_dffdffdc907047058960fa61d947184a.pdf?index=trueIn PDF document text
    • http://xivutunitilema.epizy.com/spelling_rules_ks2_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/zijivevip/happy_birthday_song_for_child_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tojabixefova/allow_filtering_in_cassandra_performance.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_off0000e8f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8F9 5436 bytes
SHA-256: 6f1b4faa55130be21a2354b9febe7ac15c017565eae022907cb8f4d637f787f4
font_01_sfnt_off0000fb63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB63 10568 bytes
SHA-256: 3961b14e3c1db5b733bc31c3719466d8698ca194ea7ae5b81ca0adff36b99185

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