Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dc7e14e9ac793ed…

MALICIOUS

PDF

53.2 KB Created: 2020-08-17 07:32:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2c9bab10de03aa1da44742fb7930efe2 SHA-1: cdbd74d8870d69326ffff18b4f7d7327877b80b7 SHA-256: 1dc7e14e9ac793ed80f3be59d9b0099efe4c0cef4e109e32f0efb758e41c031b
154 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is https://ttraff.com/pify?keyword=marvel+heroes+2015, which is likely used to funnel victims to further malicious content. The document body, though heavily obfuscated, contains references to this URL, reinforcing its role in the attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=marvel+heroes+2015
    • http://files.milagrodesignsantafe.com/uploads/1/3/2/7/132710779/binuxekaz.pdf
    • https://cdn.shopify.com/s/files/1/0438/2919/9005/files/bazifugejabuzi.pdf
    • https://cdn.shopify.com/s/files/1/0438/9725/8136/files/87816641704.pdf
    • https://cdn.shopify.com/s/files/1/0434/6239/4008/files/53837099869.pdf
    • https://cdn.shopify.com/s/files/1/0445/6975/5812/files/printable_credit_report_dispute_forms.pdf
    • https://cdn.shopify.com/s/files/1/0434/7356/7901/files/79538103959.pdf
    • https://cdn.shopify.com/s/files/1/0431/4667/4336/files/chinese_ttf_font.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3750/files/service_catalogue_sample.pdf
    • https://cdn.shopify.com/s/files/1/0443/8743/4662/files/bifuboderejexogumozulun.pdf
    • https://cdn.shopify.com/s/files/1/0439/6980/6494/files/best_free_annotation_app_android.pdf
    • https://cdn.shopify.com/s/files/1/0433/5638/9528/files/56474658704.pdf
    • https://cdn.shopify.com/s/files/1/0433/5288/3352/files/guvikuturuxufaro.pdf
    • https://cdn.shopify.com/s/files/1/0438/8922/9979/files/jodisixoxanuronupabat.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_off000090c4.bin
b3634c629c8d6bd8c0e9e4896e7306b0302c493e6ba69f3da2b5d84d3a51749c
pdf-font-stream PDF embedded font (sfnt) at offset 0x90C4 5288 bytes
font_01_sfnt_off0000a2cf.bin
b2f81c268dc914bd301571b5b0ef8daa9ec457b30601b905e77c9453a66577fb
pdf-font-stream PDF embedded font (sfnt) at offset 0xA2CF 10912 bytes