Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7969fb55c62979f…

MALICIOUS

PDF

54.8 KB Created: 2020-08-25 01:49:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83a57212313c1b27827b13d0d95256af SHA-1: 5f52299260f95c23459e563b9a0d8dfe0816ef5c SHA-256: c7969fb55c62979fc51c4e55bd6cbe1876f15afa7c1e9032df11733f3ce06129
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=calligraphy+name+app+free'. This URL is presented within the document body, suggesting a social engineering lure to trick the user into clicking it. The PDF also contains a large number of external links, many hosted on Shopify, which is flagged as a link farm. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.

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.cc/pify?keyword=calligraphy+name+app+free
    • http://files.gingersurprises.com/uploads/1/3/1/4/131408581/pijiv.pdf
    • http://dujafata.guqintables.com/uploads/1/3/0/8/130874565/viguwok_wavisup.pdf
    • http://mupuj.howesenglish.com/uploads/1/3/2/3/132302842/5896551.pdf
    • http://files.arcadecoffee2go.com/uploads/1/3/1/4/131437229/785157.pdf
    • http://files.reliefequineproducts.com/uploads/1/3/2/3/132303133/3443880.pdf
    • https://cdn.shopify.com/s/files/1/0437/8876/3298/files/23331986811.pdf
    • https://cdn.shopify.com/s/files/1/0427/7446/2631/files/xinisetawi.pdf
    • https://cdn.shopify.com/s/files/1/0464/6145/2440/files/gezatugaviwup.pdf
    • https://cdn.shopify.com/s/files/1/0437/3820/2273/files/qdeoks_burn_the_stage_movie.pdf
    • https://cdn.shopify.com/s/files/1/0433/3695/8104/files/list_of_abbreviations_for_students.pdf
    • https://cdn.shopify.com/s/files/1/0433/8289/8840/files/nulanajuwamulukonuwezoden.pdf
    • https://cdn.shopify.com/s/files/1/0435/7101/9935/files/algorithme_de_tri_cours.pdf
    • https://cdn.shopify.com/s/files/1/0430/4420/8797/files/mafujenotolizek.pdf
    • https://cdn.shopify.com/s/files/1/0431/6420/5216/files/mexuxepilelovimekasum.pdf
    • https://cdn.shopify.com/s/files/1/0434/2012/3293/files/70013307640.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_off00007473.bin
8b4eb726abf76485a073c541e4e283c697f469e7bfc5a7b51ca539c4dab85e14
pdf-font-stream PDF embedded font (sfnt) at offset 0x7473 5144 bytes
font_01_sfnt_off000085cd.bin
e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d
pdf-font-stream PDF embedded font (sfnt) at offset 0x85CD 1800 bytes
font_02_sfnt_off00008e5b.bin
bd01342ffee6de2476664c6b641d319dcc9f2fb3ee9e4b687f4614c59e68f64a
pdf-font-stream PDF embedded font (sfnt) at offset 0x8E5B 12824 bytes
font_03_sfnt_off0000b798.bin
4698414b028a2bf33f2446857783e96b464e6bc1594aa36800f99dec8da3d207
pdf-font-stream PDF embedded font (sfnt) at offset 0xB798 16520 bytes