Malicious PDF — malware analysis report

Static analysis result for SHA-256 9aba9d2872b27e47…

MALICIOUS

PDF

45.1 KB Created: 2020-08-19 11:56:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e5c7e67e2d04ba0b8e6bb8d36259e6ae SHA-1: d29dfdba40c76c4bf2d78cb2bc604a4a2809a898 SHA-256: 9aba9d2872b27e47b02652b5853ddfdee3b5a739735d939b0962af251c2068d2
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link that redirects to a known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to 'free android apps root users' and the malicious URL, suggesting a lure for potentially unwanted software or further compromise. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, many hosted on Shopify, which is a common tactic for distributing malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://ttraff.com/pify?keyword=free+android+apps+root+users
    • http://mupid.kissadult.com/uploads/1/3/0/7/130776445/kebak.pdf
    • http://wapepedu.unicaninternational.com/uploads/1/3/1/0/131071021/boguranaxopik.pdf
    • http://files.intsangano.com/uploads/1/3/1/4/131483685/fojig.pdf
    • https://cdn.shopify.com/s/files/1/0433/0556/6366/files/47716033094.pdf
    • https://cdn.shopify.com/s/files/1/0437/1218/4469/files/missing_decimal_number_line_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0434/5239/9777/files/legazubibefedab.pdf
    • https://cdn.shopify.com/s/files/1/0439/7803/1262/files/11502437349.pdf
    • https://cdn.shopify.com/s/files/1/0438/1245/4560/files/92141410438.pdf
    • https://cdn.shopify.com/s/files/1/0431/9382/7485/files/letutupagasanujifob.pdf
    • https://cdn.shopify.com/s/files/1/0431/6001/0912/files/bixasikuxadivazafonob.pdf
    • https://cdn.shopify.com/s/files/1/0430/2100/9053/files/42488295552.pdf
    • https://cdn.shopify.com/s/files/1/0435/8216/1053/files/battleship_movie_free_online.pdf
    • https://cdn.shopify.com/s/files/1/0435/2635/7152/files/anjumalai_alaga_ayyappan_songs_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/6336/2204/files/10243426729.pdf
    • https://cdn.shopify.com/s/files/1/0431/9815/2866/files/adobe_illustrator_cs6_software.pdf
    • https://cdn.shopify.com/s/files/1/0429/3623/8236/files/83868320877.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_off000072fb.bin
3770ad1b0bf4e129e8c7880781a71cc5c0fa820b6d014496d7cc00ca4f54a25b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72FB 4876 bytes
font_01_sfnt_off00008396.bin
89d9e5ea37d2f09ee418803a92b1012220d468ea9e066861d2002e759acdd16e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8396 10364 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.