Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dfd7330c62a8bcb…

MALICIOUS

PDF

80.7 KB Created: 2021-01-27 20:51:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 2b66e500b70e7d35e02a8046bc7535d8 SHA-1: a0edd2ac306f9ec8233112f602efe06367a58788 SHA-256: 6dfd7330c62a8bcb5945365802891c44ca18eaa9e2c802d639ffb686356cc801
214 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to known malicious redirector infrastructure or are part of a link farm designed to host malicious content. The heuristic firings indicate it's a malicious redirector and part of a link farm, and ClamAV detected it as a phishing trojan. The document body, though heavily obfuscated, suggests a lure related to 'Airbnb SWOT analysis' to entice users to click the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/123?utm_term=airbnb+swot+analysis In PDF document text
    • http://nature-ital.space/fireman_ed_jetsvy1n1.pdfIn PDF document text
    • http://ig-copyrighthelpcenter.com/8_ball_pool_long_guideline_tooldd60s.pdfIn PDF document text
    • http://bossyonlinex.com/download_preset_lightroom_ala_selebgram_free9106p.pdfIn PDF document text
    • https://selokifasafu.weebly.com/uploads/1/3/4/3/134383977/679a4817aa0a.pdfIn PDF document text
    • https://nawawedivoxoni.weebly.com/uploads/1/3/4/7/134719505/dozutekule.pdfIn PDF document text
    • http://hurricane1.space/66589843810mmosi.pdfIn PDF document text
    • https://walikuroxora.weebly.com/uploads/1/3/2/8/132815001/jajexad-sivisibudova-siponeg.pdfIn PDF document text
    • https://cdn.sqhk.co/pulafefer/iaDjdid/conquest_of_the_planet_of_the_apes_ending.pdfIn PDF document text
    • http://govnosiakxws.online/jukezogobeist7d.pdfIn PDF document text
    • https://kamedewogivazu.weebly.com/uploads/1/3/4/0/134096977/6ba3457db3623.pdfIn PDF document text
    • http://biggymstoe.com/savitaduneridly9m2.pdfIn PDF document text
    • http://mxbur.fun/welafu3qmq.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/vebenok/nemegujuxirav.pdfIn PDF document text
    • https://s3.amazonaws.com/kavalukato/geletotinelisiruxewajuvo.pdfIn PDF document text
    • https://s3.amazonaws.com/pazatuv/cleartrip_apps_free.pdfIn PDF document text
    • http://boripodadup.epizy.com/tufagotikig.pdfIn PDF document text
    • https://s3.amazonaws.com/pizexopenaxu/82581462280.pdfIn PDF document text
    • http://kifemulawej.epizy.com/air_pollution_information_free.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_off0000f591.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF591 3264 bytes
SHA-256: 52196a7dddfa64108bc62c36962c59c7ef2d09c9265dd712f893415919ed8305
font_01_sfnt_off00010146.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10146 5000 bytes
SHA-256: e9b7e598d41232f5fe87ab1c7608c9cb26930f25b3bf3afef07ce6db089bc79f
font_02_sfnt_off00011268.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11268 10256 bytes
SHA-256: c0f0740cc9a0ecbfc31fb926c9fb5e3aef6b0b2f1e20e40298a65c5b8a7dff01

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