PDF malware analysis — malicious · 4fbd9c2047fc21a0

MALICIOUS

PDF

42.4 KB Created: 2020-09-07 06:58:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 110165e1b2e5b700e54fd2b4ba07fe03 SHA-1: 9f7ff7fdc32fbc0e873fdc17941cb085ae78a062 SHA-256: 4fbd9c2047fc21a02a84378eb99a8bd0d20f6a02b507b53b81a9226d6a2f1b4e

170 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple heuristics indicating malicious intent, including a critical finding of a malicious redirector link and a link farm. The document body and embedded URLs suggest a lure related to a 'Bpi app free', which, combined with the advance-fee scam lure heuristic, points to a phishing or scam attempt. The primary malicious IOC is the redirector URL, which is likely used to lead the user to a malicious site.

Heuristics 5

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.
Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE

Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
Fake invoice / payment lure low SE_INVOICE_LURE

Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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.me/wix?keyword=bpi+app+free
- https://static.usrfiles.com/ugd/361f4b_215e1c5209734c299f59b27d8f3e8e0c.pdf
- https://static.usrfiles.com/ugd/b77b08_1e87ea8fede24ca7abf37a38a371d273.pdf
- https://static.usrfiles.com/ugd/8b9728_a9ade5528d9045389d7823cf9d049fc6.pdf
- https://static.usrfiles.com/ugd/cfbfd2_1239e5b11fad403abb9e257ccfc79f00.pdf
- https://static.usrfiles.com/ugd/4c76bf_d792b0d352f841979b4f14c3258cafc4.pdf
- https://static.usrfiles.com/ugd/e1d12c_7117ae20b09a4ef9bd39c81ed8a1d4f4.pdf
- https://static.usrfiles.com/ugd/ddb60a_6172ee6b38494eac9ff98fe1a811d99e.pdf
- https://static.usrfiles.com/ugd/451a43_ae78a2a58c574125b22509c642213ad3.pdf
- https://static.usrfiles.com/ugd/0df15e_ca61db79d83c4a0d9ac01641a4deb03b.pdf
- https://static.usrfiles.com/ugd/ea2f88_081a61f9456e4a52b2b0ffefbde4e0be.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.

Filename	Kind	Source	Size
`font_00_sfnt_off00005d5f.bin` `cebd58f28b991a2451142f9899e57faab93bed91db35e32ad516a144b48ddf93`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5D5F	4224 bytes
`font_01_sfnt_off00006bb8.bin` `30975e6d206f12546ec0030bb740752a1b674506194c0db53dac507139598620`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6BB8	10456 bytes
`font_02_sfnt_off00008f6a.bin` `4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8F6A	4324 bytes

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