Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa4077a1337eab2f…

MALICIOUS

PDF

39.6 KB Created: 2020-08-02 06:47:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e96f7354a0b2f75b74af50abfc9565f SHA-1: dd531f46bb92c5fa6dbc4db1420059b91960f401 SHA-256: fa4077a1337eab2f392a0e16bf0c3c2d7ae2ed889207fb9728899ff0f1dfebf7
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to what appears to be a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.ru. The document body, though heavily obfuscated, contains the URL for the malicious redirector and several benign-looking PDF links, suggesting a lure to drive traffic to malicious infrastructure. No scripts were extracted from this sample.

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=love+death+4
    • http://files.usa-smoking-supply.com/uploads/1/3/1/4/131406518/zaxanuna-migojikoreju-dafogelodop-pirokok.pdf
    • http://files.nadinedarling.com/uploads/1/3/0/8/130873923/78c312bf.pdf
    • http://files.atlantikwall-museum.nl/uploads/1/3/0/8/130873921/bavofunopaza.pdf
    • https://cdn.shopify.com/s/files/1/0434/8638/0189/files/tugiziwa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0432/1184/files/sexijubililigakogozosoge.pdf
    • https://cdn.shopify.com/s/files/1/0437/6556/3541/files/ayurvedic_cooking_for_self_healing_usha_lad_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0429/8155/6375/files/mewakomewofoteponeten.pdf
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/nonutarelarib.pdf
    • https://cdn.shopify.com/s/files/1/0430/3529/5905/files/88482310881.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dadimutixiwukigojubiw.pdf
    • https://cdn.shopify.com/s/files/1/0429/8221/1733/files/php_mysql_class.pdf
    • https://cdn.shopify.com/s/files/1/0433/1329/9620/files/xofefubusu.pdf
    • https://cdn.shopify.com/s/files/1/0429/4744/4903/files/34661607672.pdf
    • https://cdn.shopify.com/s/files/1/0432/3203/4976/files/xutufamepasasomen.pdf
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/xuzenuwikabimunorojawite.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005004.bin
62ff1eb0e79c63ed0dae9f0f1176e252e9d58cfe14e64865406b82df59142c04
pdf-font-stream PDF embedded font (sfnt) at offset 0x5004 3652 bytes
font_01_sfnt_off00005ce2.bin
cc980f399e4ba31491627035dcec344bdeddb3628c5df6a209660bc88b417175
pdf-font-stream PDF embedded font (sfnt) at offset 0x5CE2 4696 bytes
font_02_sfnt_off00006ce3.bin
b82682341cd519971c024eb15968da4c86431463cd91a5b2ba73de3f0b6d37e8
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CE3 10396 bytes