Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9f887d55b82e61a…

MALICIOUS

PDF

46.2 KB Created: 2020-08-22 09:20:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 567b960a94ed19b4a73e53ee248d8f1f SHA-1: dba1aebdbaea918a7b02d427f63ddcadf7059209 SHA-256: d9f887d55b82e61a134a3728c6cc3c858a17e39d689ad2ea1f48e759373457f0
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body also contains this URL and a secondary link to 'cdn.shopify.com', which is part of a link farm. The presence of a 'download button' heuristic further suggests a lure to trick the user into clicking the malicious link. The primary malicious URL is likely used to redirect users to a phishing site or download further malware.

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.com/pify?keyword=blackberry+10.+3.+1+stl100-+1+autoloader
    • http://files.gccvista.com/uploads/1/3/1/4/131407709/veferir.pdf
    • http://bagonuded.littlecharliewheeler.com/uploads/1/3/2/3/132303099/c954d7653.pdf
    • http://files.redfoxteas.com/uploads/1/3/0/8/130814346/sepitibijum.pdf
    • https://cdn.shopify.com/s/files/1/0430/7091/4717/files/92972264042.pdf
    • https://cdn.shopify.com/s/files/1/0428/3655/7987/files/49218196806.pdf
    • https://cdn.shopify.com/s/files/1/0441/2217/7688/files/besefakewaxafetaxu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7663/2214/files/rocker_anarcho_syndicalism.pdf
    • https://cdn.shopify.com/s/files/1/0430/4764/9429/files/nijupotadametenudu.pdf
    • https://cdn.shopify.com/s/files/1/0429/1385/7692/files/schedule_b_form_941.pdf
    • https://cdn.shopify.com/s/files/1/0435/6295/9006/files/rubuna.pdf
    • https://cdn.shopify.com/s/files/1/0427/8580/0358/files/193343515.pdf
    • https://cdn.shopify.com/s/files/1/0428/7440/5020/files/muwisezofazux.pdf
    • https://cdn.shopify.com/s/files/1/0434/6085/3912/files/zipodexovene.pdf
    • https://cdn.shopify.com/s/files/1/0433/2827/4587/files/zopok.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_off00006549.bin
528ab64c160056dc3be5a3034f3c5387acb8fa38430cf583f509ce03719fd657
pdf-font-stream PDF embedded font (sfnt) at offset 0x6549 5436 bytes
font_01_sfnt_off000077e8.bin
e595751b52a74d6afd7281b3215894d34b52da1424b457447aecf0d282607724
pdf-font-stream PDF embedded font (sfnt) at offset 0x77E8 10500 bytes
font_02_sfnt_off00009be0.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x9BE0 4324 bytes