Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a9722a05232a36d…

MALICIOUS

PDF

82.0 KB Created: 2021-05-15 01:12:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 9adc3fbcf6e408f6bd04c28579a9d5ad SHA-1: 1123dc4c1c29d5a662935dd2ca5fd13ccce430c7 SHA-256: 6a9722a05232a36df0cb079ac14461c16df564f75fe5f4e3e45672c1ff9de69b
134 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV. It contains numerous embedded URLs, with one notable URL pointing to a potential phishing or malware distribution site. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a large number of links on disposable hosting, suggesting an attempt to obscure the true malicious destination. The document body, though heavily obfuscated, contains text related to 'SAP Basis' and appears to be a lure for users to click on the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

Heuristics 6

  • 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 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://jottigo.ru/strik?utm_term=how+to+start+learning+sap+basis PDF link annotation
    • http://x-bionic.shop/vivugezuxufuxikudimlnvo5.pdfIn PDF document text
    • https://subopojulolilat.weebly.com/uploads/1/3/4/3/134319837/7058588.pdfIn PDF document text
    • http://bumawusuka.mypressonline.com/mosoguvufokazixuj.pdfIn PDF document text
    • https://bagamijak.weebly.com/uploads/1/3/1/3/131380043/pugitogine.pdfIn PDF document text
    • http://uaportal.site/combined_gas_law_questions_and_answersbw7jd.pdfIn PDF document text
    • https://difanewoxapazu.weebly.com/uploads/1/3/5/3/135321324/6020774.pdfIn PDF document text
    • http://jasazotinalol.mygamesonline.org/11309059242.pdfIn PDF document text
    • https://sazukigozozabep.weebly.com/uploads/1/3/4/3/134310948/02ce1546.pdfIn PDF document text
    • https://rutejiredoratel.weebly.com/uploads/1/3/1/3/131383841/wumip_kiladejujazixi.pdfIn PDF document text
    • https://japapetokanov.weebly.com/uploads/1/3/1/4/131454126/8ef2b1c43326.pdfIn PDF document text
    • http://sugoxebojun.getenjoyment.net/budapest_walking_map.pdfIn PDF document text
    • http://callup.today/sony_xbr55x850b_hdrds8h6.pdfIn PDF document text
    • http://bcpzonasegurape2-viabcp.com/can_infinity_be_a_limitu1gzu.pdfIn PDF document text
    • https://jodalutuz.weebly.com/uploads/1/3/4/4/134444421/68ddbed6.pdfIn PDF document text
    • https://tevufipe.weebly.com/uploads/1/3/1/6/131606546/1621651.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fatavetotujel.onlinewebshop.net/cretaceous_tertiary_boundary.pdfIn PDF document text
    • https://s3.amazonaws.com/jifedefujodu/remupezoxe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b436dc2-cfdc-4f9c-9094-9685474b2d1e/spyder_imagine_select.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77cb4677-f99c-4702-9d63-d5c3e63c7239/nuwuraxojap.pdfIn PDF document text
    • https://s3.amazonaws.com/gelawiweza/beep_beep_alarm_ringtone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/033098f5-7563-43da-ac3b-df82ef33b263/7th_grade_grammar_test_with_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6be53ffb-f5a4-4233-95be-92f81952ec24/gutep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df215d5e-9d2d-4520-a7dd-b606d70ed0f7/weight_watchers_digital_scale_reset_button.pdfIn PDF document text
    • https://s3.amazonaws.com/bisapovepizaj/wapudurupiwu.pdfIn PDF document text
    • https://s3.amazonaws.com/zonebon/fiwexibitapejaxen.pdfIn PDF document text
    • http://bexovivuvere.myartsonline.com/xipezixar.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC74 5180 bytes
SHA-256: dda880f4f438f7387b6e72b473d41fbeaf16e028c652ad94e3862852a5dba50a
font_01_sfnt_off0000fe32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE32 10780 bytes
SHA-256: b775c1991ac380ad6afa631fd089518ad92b66a95424d972aee3d68fa70d0969
font_02_sfnt_off00012364.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12364 16092 bytes
SHA-256: e9fe716c2abc985b12a899a49d5539e4e8be1b56d50c083b30290d85a2a7c848