Malicious PDF — malware analysis report

Static analysis result for SHA-256 979011d58f2a2f46…

MALICIOUS

PDF

53.2 KB Created: 2020-08-23 10:47:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c5eb28eaa1c5729f0d3cc0ec2d386f4d SHA-1: 1584df8e15005458d290b1930b1c1e9dd3ba080e SHA-256: 979011d58f2a2f46d6c4faa337863368984f0bfaee22fc46831533a6b810f423
152 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.cc/pify?keyword=airdroid+premium+free+apk', is flagged as a malicious redirector. The document body, though heavily obfuscated, appears to reference 'Airdroid premium free apk', suggesting a lure to download potentially unwanted or malicious software. The presence of numerous external PDF links, including one hosted on Shopify, indicates a link farm strategy, likely to improve SEO for malicious content or to distribute further payloads.

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.cc/pify?keyword=airdroid+premium+free+apk
    • http://files.burkardphotos.com/uploads/1/3/0/7/130776394/zolazunizepifevaguk.pdf
    • http://files.alanamirror.com/uploads/1/3/2/6/132682731/zumejugawedigul-gagaxapu.pdf
    • https://cdn.shopify.com/s/files/1/0435/3458/1911/files/remote_controlled_john_deere.pdf
    • https://cdn.shopify.com/s/files/1/0433/9505/5777/files/61032943016.pdf
    • https://cdn.shopify.com/s/files/1/0429/3568/1180/files/15699427418.pdf
    • https://cdn.shopify.com/s/files/1/0435/8517/5713/files/27191535358.pdf
    • https://cdn.shopify.com/s/files/1/0435/5896/1315/files/23961346043.pdf
    • https://cdn.shopify.com/s/files/1/0429/7408/5279/files/zogapajute.pdf
    • https://cdn.shopify.com/s/files/1/0427/9438/5575/files/xezulel.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/14845713481.pdf
    • https://cdn.shopify.com/s/files/1/0431/0797/5330/files/vanav.pdf
    • https://cdn.shopify.com/s/files/1/0436/3704/7449/files/aptitude_test_papers_sri_lanka_in_english.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f2b.bin
36ebb7c63e25cf5a431895c5747b08c9d9bd56c5e12fe5243ab0df56d01690a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F2B 4728 bytes
font_01_sfnt_off00007f3a.bin
fe14a8a5f65bdf01674d731b63d6a4ff9d1fd1c78d6124f5bb97433bea7d7504		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F3A 10456 bytes
font_02_sfnt_off0000a33f.bin
9af6fc3bf9d751f70540aea0fa47faa159a3604992cda23d2adcda3ffc5346b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA33F 16092 bytes
font_03_sfnt_off0000b806.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB806 4324 bytes

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