Malicious PDF — malware analysis report

Static analysis result for SHA-256 88a02859ea788a90…

MALICIOUS

PDF

41.5 KB Created: 2020-08-10 04:16:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 45fabb8f826199a24853bee0fc9b2d6c SHA-1: 72569f767aa41824ec26b125630b561bf3ec32d5 SHA-256: 88a02859ea788a900093232236002782f0e18b34b89aceb0c8f2a9f441c990b1
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 'https://ttraff.cc/pify?keyword=proteinuria+adalah+pdf'. It also exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains the same text as the malicious URL's keyword parameter, suggesting a lure to trick users into clicking the malicious link. No scripts were extracted from this sample.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=proteinuria+adalah+pdf
    • http://files.radiancerestoration.net/uploads/1/3/1/4/131437161/muputadusupijegu.pdf
    • http://xivetaro.mouseducktravel.com/uploads/1/3/1/4/131407005/3375275.pdf
    • http://files.weseeyoujohn.org/uploads/1/3/0/8/130813612/pezimiwil.pdf
    • http://files.henryward-design.com/uploads/1/3/0/8/130814411/kokadotavopuki.pdf
    • https://cdn.shopify.com/s/files/1/0428/2492/5351/files/59746000577.pdf
    • https://cdn.shopify.com/s/files/1/0432/5870/8118/files/38070117588.pdf
    • https://cdn.shopify.com/s/files/1/0434/0688/5020/files/wow_shimmering_shell.pdf
    • https://cdn.shopify.com/s/files/1/0434/8110/4541/files/rogadepezoxeg.pdf
    • https://cdn.shopify.com/s/files/1/0429/2739/0887/files/41757771550.pdf
    • https://cdn.shopify.com/s/files/1/0431/5552/1695/files/27403772379.pdf
    • https://cdn.shopify.com/s/files/1/0432/1977/9742/files/18277214095.pdf
    • https://cdn.shopify.com/s/files/1/0431/8330/8955/files/temeremosiwugaba.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kevaziretojigadogikoranab.pdf
    • https://cdn.shopify.com/s/files/1/0429/7824/6815/files/1150703867.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dedijadexurusefux.pdf
    • https://cdn.shopify.com/s/files/1/0433/7346/1669/files/ave_maria_gounod_violino.pdf
    • https://cdn.shopify.com/s/files/1/0431/6443/4589/files/pulofojisudezufa.pdf
    • https://cdn.shopify.com/s/files/1/0428/8167/9523/files/vasovizivom.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_off0000665a.bin
92693a0bff2fee9748814e7f24c3d69596f253a9d915ab4c9c746ef5394b0888
pdf-font-stream PDF embedded font (sfnt) at offset 0x665A 4952 bytes
font_01_sfnt_off00007726.bin
70dadd7e357b8b564aa377812b04485db4b4bf541a2ceb748b508d93e36866c0
pdf-font-stream PDF embedded font (sfnt) at offset 0x7726 9964 bytes