Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d7189928dfcb08d…

MALICIOUS

PDF

43.7 KB Created: 2020-08-22 18:07:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 749597cd25249d7fa0c07c70f660b845 SHA-1: 648febd2d4891283106fe48e681cc2d5f9f1214c SHA-256: 2d7189928dfcb08d62426bcd92d976701ee844315b15fbcf9895451cf07ebd41
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=best+unlocked+cdma+android+phones'. This indicates a phishing or scam attempt, leveraging a seemingly innocuous document body to trick users into clicking the malicious URL. The presence of a large number of external PDF links, many hosted on Shopify, further supports a link farm or SEO poisoning tactic to distribute the malicious content. 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.com/pify?keyword=best+unlocked+cdma+android+phones
    • http://dawejuve.gecova.com/uploads/1/3/0/8/130874104/2766669.pdf
    • http://xefopu.charlenemosley.com/uploads/1/3/1/4/131438044/naxililer_remepavukuvate_jimigojovuke.pdf
    • https://cdn.shopify.com/s/files/1/0438/9116/3291/files/amd_bluetooth_driver_windows_10.pdf
    • https://cdn.shopify.com/s/files/1/0431/2452/3170/files/85_monte_carlo.pdf
    • https://cdn.shopify.com/s/files/1/0429/5173/7498/files/display_7_segmentos_doble_anodo_comun_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0429/6084/7004/files/las_cavidades_del_cuerpo_humano.pdf
    • https://cdn.shopify.com/s/files/1/0429/8915/8554/files/rerezuputiti.pdf
    • https://cdn.shopify.com/s/files/1/0428/9236/1887/files/cool_math_games_clicker_heroes.pdf
    • https://cdn.shopify.com/s/files/1/0437/7097/0274/files/melopijanefenagifuzo.pdf
    • https://cdn.shopify.com/s/files/1/0438/3748/9309/files/healthcare_management_services_agreement_template.pdf
    • https://cdn.shopify.com/s/files/1/0458/5432/6937/files/zwavelzure_ammoniak_formule.pdf
    • https://cdn.shopify.com/s/files/1/0450/1169/7814/files/farikemilaresam.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_off00006ba2.bin
6b981de65d4395a73ad9ec8c43a1e597f4adfd7ad461cc53c04415f2661334ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA2 5428 bytes
font_01_sfnt_off00007de4.bin
334dfe82d910e716db46f7492688ad1eae76f6171baecfb8f87a3ac920d33321		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DE4 10756 bytes

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