Malicious PDF — malware analysis report

Static analysis result for SHA-256 32ed0c26b68df7a0…

MALICIOUS

PDF

81.0 KB Created: 2020-10-28 22:53:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: a72adbf36be2aefdee4e47fdee04baaa SHA-1: 1bf56c60691866c1508eeec6b94db067ae6d7356 SHA-256: 32ed0c26b68df7a0bbccc8ba77f8999d9ff8157bd6ba4a08ed2b2cc58c7bc139
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded links, many of which point to redirector infrastructure or link farms. The document body mentions "Miraland quiz answers 2019" and includes a URL that appears to be a malicious redirector, suggesting a phishing or scam attempt. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • 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://cctraff.ru/strik?keyword=miraland+quiz+answers+2019 In PDF document text
    • https://niliwuwez.weebly.com/uploads/1/3/4/2/134265541/livuwofi.pdfIn PDF document text
    • https://gupupekulumo.weebly.com/uploads/1/3/4/1/134108922/9163143.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/8925184.pdfIn PDF document text
    • https://kidunaxu.weebly.com/uploads/1/3/1/4/131437100/zilariteliwijokotisi.pdfIn PDF document text
    • https://zilavexeredora.weebly.com/uploads/1/3/0/8/130874610/9012615.pdfIn PDF document text
    • https://jiwepurojal.weebly.com/uploads/1/3/0/7/130775762/lusexaxapel.pdfIn PDF document text
    • https://boguvetasitob.weebly.com/uploads/1/3/1/3/131380850/degudipege_tarisomuzix_favij_sixelikematigab.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.thdl.org/http://www.thdl.org/TibetanIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/3239/1061/files/siine_keyboard_apk_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/joxaziteriwunebuxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0416/5285/files/might_and_magic_6_party_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6334/4797/files/nashua_mall_hours.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/wogomuregifaduxe.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/90398254427.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/8697/7441/files/virilinebudo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8273/6309/files/planet_fitness_tulsa_jobs.pdfIn PDF document text
    • https://s3.amazonaws.com/fifomi/tikoxifasajiluveluxiti.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlTibetanIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 8

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009a9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A9A 3036 bytes
SHA-256: 985d521ca06437440a3deac28dd33e6660da69ad383e6f7882dbe768413c43da
font_01_sfnt_off0000a58f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA58F 5576 bytes
SHA-256: 726b84e6fba0637c597c481a35e008262fbae4e4e4d928e7e5160c048457e34a
font_02_sfnt_off0000b871.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB871 6220 bytes
SHA-256: 83c1a71d776a2fad21dc69927c493be09c89ece2765eed7bb438891f3f2ca3bf
font_03_sfnt_off0000c797.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC797 9960 bytes
SHA-256: 893eaa3a96957380e8621858fa166d55c0174542d53f83359fd34e3f3e652850
font_04_sfnt_off0000dc50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC50 2444 bytes
SHA-256: c9aac08861a769638d054fd027a8ccd8c3769b5fe4cd8edcc9c7cfe7c269ab5c
font_05_sfnt_off0000e62e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE62E 11748 bytes
SHA-256: 673e593fd1d6604489065b9d52149aff877cd77bb84ca522e7920a342c25aa5f
font_06_sfnt_off00010e83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E83 17176 bytes
SHA-256: 4b181baa5c665a61b0906518529f1814337af1d07a79f4e93be810830b5e516f
font_07_sfnt_off000127a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127A1 2244 bytes
SHA-256: 04deeb72aa4b471d9eaaab610640e88a72f621e88a8bed8a9215561f5f3f2a4a