Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac29e89834574a0c…

MALICIOUS

PDF

50.1 KB Created: 2020-08-22 09:11:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d7271625e7dcda4e8f949f967d48aff SHA-1: 5024fb8b0f8b59531d89a97b541fcf8cb0a1f3fb SHA-256: ac29e89834574a0cf87f5c5f5ce0d42896acc8dc1485cad79db281d040454bfd
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a malicious redirector link that points to 'ttraff.cc', a known malicious domain. The document body, though partially corrupted, contains this URL and appears to be a lure for a 'rational numbers worksheet'. The presence of a mass external PDF link farm further indicates a malicious intent to distribute content through potentially compromised or malicious sites. The document also contains a visual download button lure, reinforcing the deceptive nature of the file.

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.cc/pify?keyword=rational+numbers+worksheet+for+class+8+cbse
    • http://kogoze.254court.com/uploads/1/3/2/3/132302780/6320a71e6.pdf
    • http://files.ccharveyministries.org/uploads/1/3/1/4/131411197/vopedodogejifu.pdf
    • http://files.louisacrispinart.co.uk/uploads/1/3/0/7/130776327/tinatukerijixukilo.pdf
    • http://lepipa.powermaxusa.com/uploads/1/3/0/7/130775735/9173229.pdf
    • https://cdn.shopify.com/s/files/1/0437/1460/9305/files/guidelines_metastatic_prostate_cancer.pdf
    • https://cdn.shopify.com/s/files/1/0431/4864/0413/files/vaziburelijumizudesiwa.pdf
    • https://cdn.shopify.com/s/files/1/0428/0510/0707/files/gerinefejevoganose.pdf
    • https://cdn.shopify.com/s/files/1/0434/0744/2072/files/jiwezevik.pdf
    • https://cdn.shopify.com/s/files/1/0430/9732/5732/files/42366097380.pdf
    • https://cdn.shopify.com/s/files/1/0434/0006/9285/files/jifanigez.pdf
    • https://cdn.shopify.com/s/files/1/0433/9436/7649/files/tinkers_construct_beheading.pdf
    • https://cdn.shopify.com/s/files/1/0427/4136/6951/files/fazulenabatopolipirub.pdf
    • https://cdn.shopify.com/s/files/1/0432/4684/6107/files/tubitofuwedokababinopukod.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000610a.bin
d61b5c4983ae1721b32985ca87b06537e0e354e2f2fdd3b59837b10f5d17f6bc
pdf-font-stream PDF embedded font (sfnt) at offset 0x610A 5500 bytes
font_01_sfnt_off000073a5.bin
bd47f90ec4be2c44099b062d8e46f0ec545a33d5192a18a1dc30695dc653f383
pdf-font-stream PDF embedded font (sfnt) at offset 0x73A5 10896 bytes
font_02_sfnt_off000097ef.bin
ebd2804bff382343e08f6a42dc45f69f4e794c08b23908ae60ba78ededae74b1
pdf-font-stream PDF embedded font (sfnt) at offset 0x97EF 16164 bytes
font_03_sfnt_off0000ad07.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0xAD07 4324 bytes