Malicious PDF — malware analysis report

Static analysis result for SHA-256 84d38d877e1866d9…

MALICIOUS

PDF

42.0 KB Created: 2020-08-19 01:39:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 56065273cd621e5738614e0c8b61bc8a SHA-1: 684c7b98b953c5fcfa61bcc2048595bb4ba015b8 SHA-256: 84d38d877e1866d9b832e19e312ba704849533da661dfe415f29e5533df06fb1
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, which is further supported by the presence of a PDF link farm. The document body, though partially corrupted, contains the URL 'https://ttraff.cc/pify?keyword=atypical+pneumonia+in+pediatrics+pdf', indicating a lure to a malicious site. The file's purpose appears to be directing users to malicious infrastructure through deceptive content.

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=atypical+pneumonia+in+pediatrics+pdf
    • http://kixuzut.createdgainesville.com/uploads/1/3/0/7/130775413/tanevifup-wifofimo-jenoziz.pdf
    • http://files.bywheelandbywing.com/uploads/1/3/2/3/132303235/mizufatanalubefabo.pdf
    • https://cdn.shopify.com/s/files/1/0427/9359/9132/files/38892767293.pdf
    • https://cdn.shopify.com/s/files/1/0428/0965/5462/files/sududakadupo.pdf
    • https://cdn.shopify.com/s/files/1/0431/1531/5349/files/bizid.pdf
    • https://cdn.shopify.com/s/files/1/0431/5830/6965/files/xupirozawulaxur.pdf
    • https://cdn.shopify.com/s/files/1/0432/4058/7423/files/riesgo_relativo_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0432/6768/6558/files/perfect_uke_chords.pdf
    • https://cdn.shopify.com/s/files/1/0430/2998/7489/files/refetulajevig.pdf
    • https://cdn.shopify.com/s/files/1/0429/4190/7100/files/what_channel_is_mtvu_on_dish.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/74195332560.pdf
    • https://cdn.shopify.com/s/files/1/0433/3800/6686/files/du._ac._in_marksheet_2015.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_off00006709.bin
1c8776aa7f32be625e09063b1ebaa807b210c760479465dfe71a5759dea6edaf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6709 5392 bytes
font_01_sfnt_off00007945.bin
8dd1e19f3d6cf5402b15a4440d785cc773b9321474d47cc81702d12e55008aa6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7945 10060 bytes

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