Malicious PDF — malware analysis report

Static analysis result for SHA-256 92e1befc34b671f2…

MALICIOUS

PDF

40.0 KB Created: 2020-08-18 21:05:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82617ed353204a2fd4016ca0abbde408 SHA-1: cc6d8ac0e263ead84a3da2ec877a5049ad5658f2 SHA-256: 92e1befc34b671f2950b954589d380bea45271eb0205271a4a904a81d8c67cb0
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 pointing to 'ttraff.com'. The document body, though partially corrupted, includes text related to 'tutu app' and the malicious URL, suggesting a phishing or scam lure. The presence of numerous embedded links, many pointing to Shopify domains, indicates a link farm strategy, with at least one link identified as a malicious redirector.

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.com/pify?keyword=is+tutu+app+safe+to
    • http://files.versewrights.com/uploads/1/3/0/8/130814784/tegufosibanalil.pdf
    • https://cdn.shopify.com/s/files/1/0430/1327/5811/files/kujopapurisufexu.pdf
    • https://cdn.shopify.com/s/files/1/0428/2561/3475/files/84416107307.pdf
    • https://cdn.shopify.com/s/files/1/0432/3626/2052/files/resize_mac.pdf
    • https://cdn.shopify.com/s/files/1/0433/4904/9499/files/podak.pdf
    • https://cdn.shopify.com/s/files/1/0431/6479/5044/files/free_splitter_application.pdf
    • https://cdn.shopify.com/s/files/1/0429/6550/0060/files/hannah_arendt_martin_heidegger.pdf
    • https://cdn.shopify.com/s/files/1/0431/6535/2093/files/33395248552.pdf
    • https://cdn.shopify.com/s/files/1/0435/4713/2063/files/livre_nutrition_musculation.pdf
    • https://cdn.shopify.com/s/files/1/0429/6274/7545/files/18030201327.pdf
    • https://cdn.shopify.com/s/files/1/0436/8714/9733/files/arvind_akela_bhakti_song.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_off00006081.bin
d9fb8500f1556a63ddf4aaf83cdc1867d3513f6e1b3df0562668f11b3653920d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6081 4704 bytes
font_01_sfnt_off00007092.bin
08b2b491078d931f13ad2f3ce1296ca92019d0654a74c318f752a1e04626ea5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7092 10352 bytes

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