Malicious PDF — malware analysis report

Static analysis result for SHA-256 1169a32ea8217a1d…

MALICIOUS

PDF

73.3 KB Created: 2021-03-11 00:20:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 055d105c3415c9fa100f86036b3f248f SHA-1: dc19fc18bc20a1fb19c3416007ec4ff10e2470f0 SHA-256: 1169a32ea8217a1d0458d9001079eb6adda7f07e98a5506320222d6e776674f0
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to potentially malicious content. The primary URL points to a page that appears to be a lure for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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://bologen.ru/award?keyword=action+and+nonaction+verbs+exercises+pdf PDF link annotation
    • http://morj.space/what_are_the_key_factors_of_banduras_social_cognitive_theorysdct7.pdfIn PDF document text
    • https://sazavilekin.weebly.com/uploads/1/3/4/8/134851962/9597602.pdfIn PDF document text
    • https://dodapufil.weebly.com/uploads/1/3/0/8/130813701/fidoniwav-fazofara-banafuga.pdfIn PDF document text
    • http://dumanejixaw.66ghz.com/how_did_the_great_depression_in_canada_end.pdfIn PDF document text
    • https://cdn.sqhk.co/linidivez/fjiijpB/easy_recipe_chocolate_no_bake_cookies.pdfIn PDF document text
    • https://xopisamu.weebly.com/uploads/1/3/0/7/130776659/fetupi.pdfIn PDF document text
    • https://fukikabigo.weebly.com/uploads/1/3/4/4/134457586/1725758.pdfIn PDF document text
    • https://cdn.sqhk.co/nedupugifuka/ghjggIo/johnsonville_pizza_snackers.pdfIn PDF document text
    • https://xosesobo.weebly.com/uploads/1/3/4/6/134697532/xubibinuta.pdfIn PDF document text
    • https://cdn.sqhk.co/dasofuduveje/iilhbyl/butulopak.pdfIn PDF document text
    • https://dedelazixuni.weebly.com/uploads/1/3/4/5/134596723/dixetosotobaraz-megitewox.pdfIn PDF document text
    • http://mexicotop.xyz/rebilajokemilyap7e.pdfIn PDF document text
    • https://cdn.sqhk.co/jipuxoxukul/fheBqjb/vector_signal_generator_vs_arbitrary_waveform_generator.pdfIn PDF document text
    • https://cdn.sqhk.co/minederepa/ugekha1/purofixepatudilivenonu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sabiwilurase.atwebpages.com/62538594754.pdfIn PDF document text
    • http://josisuvo.epizy.com/bauhaus_latin_flipfont_apk_3._3.pdfIn PDF document text
    • http://guzedero.rf.gd/disney_world_park_hours_november_2020.pdfIn PDF document text
    • http://litorow.myartsonline.com/lusex.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_off0000e071.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE071 5376 bytes
SHA-256: 5193b83d744654e7f3156a539ad6351426ea0a8e8a6943d0ff949ea65a4239f3
font_01_sfnt_off0000f2ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2CE 10936 bytes
SHA-256: 0981cb13b9928291c3e18f258fec8d753fc2c03e5abc7f59b2aa21cd8f651740

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