Malicious PDF — malware analysis report

Static analysis result for SHA-256 d90208e938a47463…

MALICIOUS

PDF

46.0 KB Created: 2020-08-23 16:16:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0306cc3b07e92677b5e2bcf594af69c0 SHA-1: d2cc3b5235e4a2da7d42fe102683d0eebfdb3a5d SHA-256: d90208e938a474636f1284bd6cb6768f88b497114ee8c332e984cf9288e34876
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a high density of external links, with a critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=auto+login+facebook+android', which is flagged as malicious. This suggests the primary purpose is to redirect users to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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://ttraff.ru/pify?keyword=auto+login+facebook+android
    • http://files.lllofaz.org/uploads/1/3/0/8/130873851/7137522.pdf
    • http://files.thegardenchild.com/uploads/1/3/2/6/132681448/rinutozesa_bojogutekoniker.pdf
    • http://files.lacucharamarket.com/uploads/1/3/0/7/130776225/lozor_limezi_ninibusejan_jimuli.pdf
    • http://rixovo.oneplanetsaanich.org/uploads/1/3/0/7/130738848/jefoxokijopes.pdf
    • http://files.josepblas.com/uploads/1/3/1/4/131437268/kiwinorubidosa.pdf
    • https://cdn.shopify.com/s/files/1/0431/8494/7357/files/82534874086.pdf
    • https://cdn.shopify.com/s/files/1/0429/9476/1877/files/miwevunosulabo.pdf
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/os_create_folder_python.pdf
    • https://cdn.shopify.com/s/files/1/0428/6211/7023/files/29906070021.pdf
    • https://cdn.shopify.com/s/files/1/0434/0462/4021/files/guvesovaridola.pdf
    • https://cdn.shopify.com/s/files/1/0434/1035/8423/files/dadesamuga.pdf
    • https://cdn.shopify.com/s/files/1/0437/3797/2897/files/14855240356.pdf
    • https://cdn.shopify.com/s/files/1/0436/7712/2713/files/lenova.pdf
    • https://cdn.shopify.com/s/files/1/0433/6022/3397/files/captivated_by_you_sylvia_day_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/2553/0005/files/jixuzaritomutuxufuzu.pdf
    • https://cdn.shopify.com/s/files/1/0434/4227/4454/files/maltrato_infantil.pdf
    • https://cdn.shopify.com/s/files/1/0429/6241/9863/files/a_level_biology_carbohydrates.pdf
    • https://cdn.shopify.com/s/files/1/0433/6523/6901/files/mumemodabavosigi.pdf
    • https://cdn.shopify.com/s/files/1/0433/7729/5521/files/73995391534.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000075c9.bin
f9052c03f016ddf8507414a4c0e9d58a552fe1470a75332ee89a43cb0aeebae3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75C9 5204 bytes
font_01_sfnt_off0000878a.bin
a76563e278dd63420c26e44cf24450c16741181831f5de7e14925d5d7e64c339		 pdf-font-stream PDF embedded font (sfnt) at offset 0x878A 10308 bytes

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