PDF malware analysis — malicious · 425bca5bd3c64694

MALICIOUS

PDF

43.2 KB Created: 2020-09-01 18:54:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: e539b3ac9e04ecc552a0520ea400bacd SHA-1: 13037939e5dc9ed44a3bbe902ff3572bffd09949 SHA-256: 425bca5bd3c64694ecf53616a1f661a28d675039351394c383d3379033107fbf

130 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a prominent link that redirects to a malicious URL, disguised with a keyword relevant to educational content. This is further supported by heuristics indicating a malicious redirector and a link farm, suggesting an attempt to drive traffic to potentially harmful sites. The presence of a visual call-to-action button reinforces the deceptive nature of the document.

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.link/wix?keyword=geometry+worksheets+grade+9
- https://cdn.shopify.com/s/files/1/0432/5670/9273/files/43406795801.pdf
- https://cdn.shopify.com/s/files/1/0428/9282/0643/files/canonical_correlation_analysis_example.pdf
- https://cdn.shopify.com/s/files/1/0431/3976/0285/files/fcps_calendar_2020_19.pdf
- https://cdn.shopify.com/s/files/1/0429/5789/7882/files/venom_easy_balance_lipo_charger_manual.pdf
- https://static.usrfiles.com/ugd/834936_190d74d5725a4c3a8e023fb821ab2acc.pdf
- https://static.usrfiles.com/ugd/30e015_751720f4990740d2af19163916413fd4.pdf
- https://static.usrfiles.com/ugd/b8c837_3735ce45cf8d44ada527c25b3cb95de9.pdf
- https://static.usrfiles.com/ugd/f46427_9d93f94b0d8544388923c674abe96bcf.pdf
- https://static.usrfiles.com/ugd/e2b09b_0cabfea6e7154bdf9af5365386933679.pdf
- https://cdn.shopify.com/s/files/1/0431/7839/3762/files/bedikikema.pdf
- https://cdn.shopify.com/s/files/1/0429/9092/8026/files/69026341488.pdf
- https://static.usrfiles.com/ugd/b8c837_253cc0ff78e042fdb1ed281ec2f3713b.pdf
- https://static.usrfiles.com/ugd/197ed4_1dd4652175dc444cbc598c062f95a4c9.pdf
- https://static.usrfiles.com/ugd/fbccce_d79097d86c654c16ad3fa404399313a7.pdf
- https://static.usrfiles.com/ugd/b8c837_0cd9aa6b21b14e98aed75f44e3f86962.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.

Filename	Kind	Source	Size
`font_00_sfnt_off00006aa8.bin` `45aeae6a109193df9b4c0ac54e409a68d6ee7279d5d8f55ebbe64af46f24b3ee`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6AA8	5652 bytes
`font_01_sfnt_off00007dd3.bin` `663942d46c5d179bc534b41be63ed49cf3664576d2eac08a5c30e744c0a68941`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7DD3	10088 bytes

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