Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f56a73ceab0a69d…

MALICIOUS

PDF

43.6 KB Created: 2020-08-23 23:16:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c3643c4a9ce67dd8962be39f0e67d19 SHA-1: c2f307f4df447bafaadc0d28d114d6f56b409455 SHA-256: 1f56a73ceab0a69d6964d000465f1512ee67bd245aea6fdeb7c1d6e48898390d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of external links, many of which point to potentially malicious redirectors or benign-looking files hosted on platforms like Shopify. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags a link to 'ttraff.com', indicating a malicious redirector. The document body, though heavily obfuscated, contains the same suspicious URLs, suggesting an attempt to disguise malicious content within a seemingly normal document. No scripts were extracted, but the sheer volume of external links points to a link farm or phishing attempt.

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.com/pify?keyword=answer+happy+birthday+facebook
    • http://vuwed.jmswoodwork.com/uploads/1/3/1/3/131379246/49ec902b.pdf
    • http://gotilo.quackquackcolorado.com/uploads/1/3/0/8/130874118/0e2d5b50cf0473.pdf
    • http://zokelele.cornerstone-civil.com/uploads/1/3/1/4/131453134/83585.pdf
    • http://konim.sjyibius.org/uploads/1/3/2/8/132814930/gaxinokomekitus.pdf
    • https://cdn.shopify.com/s/files/1/0434/8100/6244/files/witcher_adventure_game_android_apk.pdf
    • https://cdn.shopify.com/s/files/1/0430/4266/8698/files/loluwepoxeluwubefawa.pdf
    • https://cdn.shopify.com/s/files/1/0434/7812/2649/files/g._n._m_nursing_admission_form_2018.pdf
    • https://cdn.shopify.com/s/files/1/0435/0086/3643/files/sotenizulidozobago.pdf
    • https://cdn.shopify.com/s/files/1/0427/7207/0556/files/wowefefasokurop.pdf
    • https://cdn.shopify.com/s/files/1/0428/1411/1903/files/tefojumune.pdf
    • https://cdn.shopify.com/s/files/1/0434/2897/0652/files/deadly_pressure_points_chart.pdf
    • https://cdn.shopify.com/s/files/1/0449/0670/9159/files/use_of_gis_in_spatial_data_analysis_and_modelling.pdf
    • https://cdn.shopify.com/s/files/1/0449/5068/3816/files/mopebutukofed.pdf
    • https://cdn.shopify.com/s/files/1/0433/7447/7473/files/37549899153.pdf
    • https://cdn.shopify.com/s/files/1/0433/4718/1718/files/33276257257.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rofan.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.

FilenameKindSourceSize
font_00_sfnt_off00006bba.bin
17ccccd89d13dff7e56d00166d58f1cf5b94de7f5592d00b78e99cdb646c6752
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BBA 5600 bytes
font_01_sfnt_off00007ec2.bin
0bdb6bf081c4f0ef32f6a796a5cf24690189556dfd6f6d327ed5eb6d0d67ea3b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EC2 10076 bytes