Malicious PDF — malware analysis report

Static analysis result for SHA-256 537377cd872eb954…

MALICIOUS

PDF

41.6 KB Created: 2020-08-06 02:24:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cdac0018f99d30dc040eaac50a7d04bd SHA-1: 624b56581bb5cf3eeceba4369e8756c9694306fb SHA-256: 537377cd872eb95447cc39b24c063cbe00e2e4bc9f2777f795a46074638ca95f
128 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific URL pointing to a known malicious redirector, ttraff.cc. The document body, though heavily obfuscated, contains the same malicious URL and a benign-looking Shopify URL, suggesting a lure to download further content. The presence of a 'download button' heuristic reinforces the social engineering aspect of this attack.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=bend+it+like+beckham+script+pdf
    • http://files.sonnambula.org/uploads/1/3/0/7/130739742/zivutidegini-nobotafebeki-wakedenuzexobog-dodal.pdf
    • http://tasusa.mosmondesign.com/uploads/1/3/0/8/130874304/derukan.pdf
    • http://tenikuse.serclc.org/uploads/1/3/1/8/131871871/6b120293a0e24f9.pdf
    • http://gunusavi.fvmediacenter.org/uploads/1/3/1/4/131438142/4804701.pdf
    • http://files.dwarvenworkshop.com/uploads/1/3/0/9/130969312/545f8b6bc332a.pdf
    • https://cdn.shopify.com/s/files/1/0440/8747/6389/files/sovusulubipupuwa.pdf
    • https://cdn.shopify.com/s/files/1/0436/8770/6777/files/codigo_de_los_caballeros_templarios.pdf
    • https://cdn.shopify.com/s/files/1/0430/4843/5861/files/wadedojatigefulisitugu.pdf
    • https://cdn.shopify.com/s/files/1/0432/3731/0626/files/20818261229.pdf
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/32858555469.pdf
    • https://cdn.shopify.com/s/files/1/0435/1574/0312/files/29507190981.pdf
    • https://cdn.shopify.com/s/files/1/0428/8721/7311/files/fosigar.pdf
    • https://cdn.shopify.com/s/files/1/0432/6971/8182/files/56531466590.pdf
    • https://cdn.shopify.com/s/files/1/0428/7463/4403/files/47708250283.pdf
    • https://cdn.shopify.com/s/files/1/0428/7922/1927/files/9283139351.pdf
    • https://cdn.shopify.com/s/files/1/0431/2802/9345/files/wuzopananozijasufonobe.pdf
    • https://cdn.shopify.com/s/files/1/0429/8833/9361/files/hunger_games_catching_fire_book_online_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/8762/5369/files/difaxupujisisabegosupo.pdf
    • https://cdn.shopify.com/s/files/1/0434/5430/0312/files/vegozaxezowojujevametemov.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_off0000644a.bin
79e8b6061ea742e8711fbf94f2ab6b5a57ee1a06523450b670a04ca356db57df
pdf-font-stream PDF embedded font (sfnt) at offset 0x644A 5648 bytes
font_01_sfnt_off0000774e.bin
5f3fd48132dd6c06e95e93dc48bb44fbca07a196003321dc2aec3b9b250aa15c
pdf-font-stream PDF embedded font (sfnt) at offset 0x774E 9932 bytes