PDF malware analysis — malicious · 7b0467b201be3cc3

MALICIOUS

PDF

53.5 KB Created: 2020-08-22 12:26:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: aa8a0a6f6b6b227ada7097de70bcfe13 SHA-1: 6d40369bba9bbcc7be27eaa4a6698191fb5d9ae7 SHA-256: 7b0467b201be3cc308b830c953d92520cc41ff9cd3fa3d7756f3be88c118c8fa

128 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though partially corrupted, suggests a lure related to an 'Mpsc combine 2018 answer key'. The presence of a download button heuristic further supports a malicious workflow. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or exploits.

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.ru/pify?keyword=mpsc+combine+2018+answer+key
- http://files.aplacetobesc.org/uploads/1/3/1/3/131379894/wuxixatijofol-netijuvamos-rudefuguvo.pdf
- http://files.su5208.org/uploads/1/3/1/0/131070651/6952763.pdf
- http://lanesu.synergistic-business-marketing.com/uploads/1/3/1/6/131636725/zafasebesapetigazi.pdf
- https://cdn.shopify.com/s/files/1/0435/9972/4702/files/pocket_clinical_examination_talley_free_download.pdf
- https://cdn.shopify.com/s/files/1/0431/5208/1053/files/pikizatibunup.pdf
- https://cdn.shopify.com/s/files/1/0437/2656/9633/files/96305964567.pdf
- https://cdn.shopify.com/s/files/1/0433/9469/5329/files/adfg_sport_fishing_report.pdf
- https://cdn.shopify.com/s/files/1/0431/3468/1250/files/85958589982.pdf
- https://cdn.shopify.com/s/files/1/0437/1628/0475/files/mexul.pdf
- https://cdn.shopify.com/s/files/1/0437/7129/7943/files/70685079038.pdf
- https://cdn.shopify.com/s/files/1/0429/7841/0655/files/42508895078.pdf
- https://cdn.shopify.com/s/files/1/0433/7437/9158/files/84430084231.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/
- https://cdn.shopify.com/s/fi

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006253.bin` `5dbab9bcb299e36d7955e85b7cb1f7805a483f2b87e9f05a02d64eacb0ac5cc1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6253	5972 bytes
`font_01_sfnt_off000076ac.bin` `695245eea5761fe2c43c84516a1822542fad147f7de24aa6e93d00de3b296428`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x76AC	14160 bytes
`font_02_sfnt_off0000a312.bin` `5e6b91e720a839aeb9b8002069fb023b4be10bc531b5ee38319991b9554cd2bc`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA312	11776 bytes

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