Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d48a24569f43b91…

MALICIOUS

PDF

78.0 KB Created: 2020-08-12 17:10:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a7bceeec19006534c9d96429512c634 SHA-1: 260527c05e322e5a956a4d1543aea14574fa5714 SHA-256: 4d48a24569f43b91cfe70be00657170557d55a7f908f11379c62fafb798418bf
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, suggests a lure related to 'concave and convex lens pdf'. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the presence of a link to known malicious infrastructure, specifically 'https://ttraff.cc/pify?keyword=concave+and+convex+lens+pdf'. This indicates an attempt to redirect the user to a malicious site.

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.cc/pify?keyword=concave+and+convex+lens+pdf
    • http://files.ellenjewett.com/uploads/1/3/1/3/131382808/jebojuxuj-golatukemelome-pegox.pdf
    • http://dabunun.pittsburghcatchwrestling.com/uploads/1/3/1/4/131483027/supizuduzaleg.pdf
    • http://dozafevew.bwmodular.org/uploads/1/3/1/4/131453215/1679400.pdf
    • http://files.harrisendofthetrailranch.com/uploads/1/3/1/4/131408738/julaziw-beturinis-pajolosedexi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/4077026649.pdf
    • https://cdn.shopify.com/s/files/1/0428/2161/5775/files/gunozebamigopud.pdf
    • https://cdn.shopify.com/s/files/1/0431/9323/7665/files/54858028346.pdf
    • https://cdn.shopify.com/s/files/1/0434/8362/7686/files/xixafijute.pdf
    • https://cdn.shopify.com/s/files/1/0438/2962/4992/files/85870189102.pdf
    • https://cdn.shopify.com/s/files/1/0440/4094/5829/files/5755376355.pdf
    • https://cdn.shopify.com/s/files/1/0430/2651/4077/files/84941063367.pdf
    • https://cdn.shopify.com/s/files/1/0445/2777/9999/files/yamaha_rx-_v673_manual.pdf
    • https://cdn.shopify.com/s/files/1/0427/5198/3772/files/85941493404.pdf
    • https://cdn.shopify.com/s/files/1/0437/6444/9437/files/6825627676.pdf
    • https://cdn.shopify.com/s/files/1/0447/7042/7031/files/callan_method_stage_7.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/44994208471.pdf
    • https://cdn.shopify.com/s/files/1/0428/9386/9223/files/ccna_routing_labs.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d173.bin
92d2253e74db01ba982a53e041d74282ab8270106538b72a48b96bca79207668		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD173 4864 bytes
font_01_sfnt_off0000e213.bin
c140fafec61acf57ad11f2da573d1168d4b17c687905bfb8a8f7ad88c24cfea6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE213 10924 bytes
font_02_sfnt_off0001079b.bin
802ebd315cc15f308dc2a4e391e99d24a085372701f8bc593186b849b234c1ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1079B 16108 bytes
font_03_sfnt_off00011c57.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11C57 4324 bytes

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