PDF malware analysis — malicious · 4f04b963712c8de9

MALICIOUS

PDF

45.4 KB Created: 2020-08-13 17:44:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 6009839b60cc1c107274d69251897792 SHA-1: 4be86abd753ca16193d0a691836ba4e9ddb09936 SHA-256: 4f04b963712c8de919a1f56c346a64269eec83a619ab2dc841fe745df0ed6b75

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector, https://ttraff.cc/wb?keyword=teaching%20english%20phonics%20worksheets, suggesting a phishing or malware distribution attempt. The document body, though partially corrupted, contains text related to 'teaching english phonics worksheets', likely a lure to disguise the malicious intent.

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/wb?keyword=teaching%20english%20phonics%20worksheets
- http://files.epsilonkappatx.com/uploads/1/3/2/7/132712530/wopopebuduw-nepow-daluw.pdf
- http://files.rmscnc.com/uploads/1/3/1/4/131453432/konozifiwuwugok.pdf
- http://files.limeswimwear.com/uploads/1/3/2/7/132740923/zananugi.pdf
- http://files.washingtonpikeumc.org/uploads/1/3/2/3/132302824/9310255.pdf
- https://cdn.shopify.com/s/files/1/0427/6345/2583/files/temazalirorimixebetig.pdf
- https://cdn.shopify.com/s/files/1/0435/1311/8872/files/mining_guide_ffxiv.pdf
- https://cdn.shopify.com/s/files/1/0431/5355/5624/files/wemufa.pdf
- https://cdn.shopify.com/s/files/1/0427/8334/2748/files/26849695817.pdf
- https://cdn.shopify.com/s/files/1/0434/7995/7669/files/alleluia_canon_mozart.pdf
- https://cdn.shopify.com/s/files/1/0432/5857/7046/files/643574390.pdf
- https://cdn.shopify.com/s/files/1/0440/7004/3813/files/50873139145.pdf
- https://cdn.shopify.com/s/files/1/0433/0425/5656/files/purilefaratukegig.pdf
- https://cdn.shopify.com/s/files/1/0438/8497/0139/files/73826481092.pdf
- https://cdn.shopify.com/s/files/1/0432/3803/1518/files/zazejanagagutup.pdf
- https://cdn.shopify.com/s/files/1/0435/4395/3567/files/english_terms_word_search.pdf
- https://cdn.shopify.com/s/files/1/0438/9961/7448/files/vakokakigukuk.pdf
- https://cdn.shopify.com/s/files/1/0431/0820/4704/files/13405504850.pdf
- https://cdn.shopify.com/s/files/1/0437/6893/8658/files/woxidenoda.pdf
- https://cdn.shopify.com/s/files/1/0432/6152/6166/files/pink_floyd_brain_damage_tab.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_off0000723a.bin` `8ba57a5e80915c43f2c7b5776af89f03c83b6865224abd84dd0c003217833b0f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x723A	5300 bytes
`font_01_sfnt_off0000844b.bin` `04c12e20f98645e346e13d492e7214b1d3002d941a1a9c598afde99981c4c412`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x844B	10676 bytes

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