Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d7af2e65f50ea69…

MALICIOUS

PDF

37.2 KB Created: 2020-08-17 07:16:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0a1a0961189ef38b34b13a7bb8c96c3d SHA-1: 3cedf415034a1972361272bbab174dbcafb2912b SHA-256: 1d7af2e65f50ea69d034cade7c0576cff5ab3f53cbc8911f5054f532017c3d8c
152 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to 'idle airline tycoon mod apk' and the malicious URL itself, suggesting a lure for users seeking game modifications. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, likely for SEO manipulation or to distribute the malicious payload across multiple domains. No scripts were extracted from this sample.

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.ru/pify?keyword=idle+airline+tycoon+mod+apk
    • http://files.nathanrgeorge.com/uploads/1/3/0/7/130740510/vewodixu-zaruzilibazul-supow.pdf
    • http://files.rusticbilliards.com/uploads/1/3/0/7/130775645/5887032.pdf
    • http://files.paparazzibuster.com/uploads/1/3/0/7/130776641/pujuzamuteliwodimaju.pdf
    • http://zenesev.the-prowler.com/uploads/1/3/1/4/131437906/c88018.pdf
    • https://cdn.shopify.com/s/files/1/0431/6489/3344/files/pebixukesajogolawo.pdf
    • https://cdn.shopify.com/s/files/1/0431/4382/3511/files/61974195766.pdf
    • https://cdn.shopify.com/s/files/1/0428/9714/6019/files/givemofa.pdf
    • https://cdn.shopify.com/s/files/1/0430/9227/9460/files/biblia_ortodoxa.pdf
    • https://cdn.shopify.com/s/files/1/0430/8205/5829/files/govidufow.pdf
    • https://cdn.shopify.com/s/files/1/0432/2977/3979/files/84388933509.pdf
    • https://cdn.shopify.com/s/files/1/0427/9199/3500/files/badazapedexafarazakenadip.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8099/files/craftsman_dys_4500_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/7741/0720/files/lejurutemifimepoze.pdf
    • https://cdn.shopify.com/s/files/1/0433/1785/4373/files/zitekaruwusu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/7868051279.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_off0000534f.bin
d0ff7a925f904eb6c6dde126bcf165ccb9f90dcee0dd2c646737e7e6e13009bb
pdf-font-stream PDF embedded font (sfnt) at offset 0x534F 5144 bytes
font_01_sfnt_off000064b9.bin
018df2d2a70e9081d1d1003a0fd4abd6a2ccda1ef28175444f48032b420a94d7
pdf-font-stream PDF embedded font (sfnt) at offset 0x64B9 10348 bytes