Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3888ac27157378b…

MALICIOUS

PDF

32.6 KB Created: 2020-08-23 22:07:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c09c1fdd7b74c4f660c865484508670 SHA-1: dbf3c71f6d93cb7ef16efc9cc8e639d9beb6e5e8 SHA-256: c3888ac27157378b2adcada0470df7bbf96e47b1d015c2f88b10bb130b6f25af
120 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, many of which point to a redirector service. The document body, though partially corrupted, suggests a lure related to 'Spider-Man homecoming coloring sheet'. The primary malicious URL, https://ttraff.com/pify?keyword=spider+man+homecoming+coloring+sheet, is identified as a malicious redirector. The presence of numerous PDF links, many hosted on Shopify, indicates a link farm strategy to distribute malicious content.

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=spider+man+homecoming+coloring+sheet
    • http://labojode.pp-personalprotection.com/uploads/1/3/0/7/130776485/16c5ea90.pdf
    • http://files.annshafer.com/uploads/1/3/0/9/130969489/kuxupom.pdf
    • http://wufojit.georgerichards.net/uploads/1/3/1/6/131637881/e22c92d.pdf
    • https://cdn.shopify.com/s/files/1/0440/0722/7542/files/nimimeboxosanijiputufi.pdf
    • https://cdn.shopify.com/s/files/1/0436/8557/6857/files/analytic_geometry_reviewer.pdf
    • https://cdn.shopify.com/s/files/1/0433/3407/4523/files/pupotedazozepirazevib.pdf
    • https://cdn.shopify.com/s/files/1/0431/7020/1760/files/finest_playa_mujeres_wedding_guide.pdf
    • https://cdn.shopify.com/s/files/1/0429/6186/2810/files/dazekodefif.pdf
    • https://cdn.shopify.com/s/files/1/0429/1257/9747/files/precalculus_mathematics_for_calculus.pdf
    • https://cdn.shopify.com/s/files/1/0432/8184/2341/files/risorisutomunewawudo.pdf
    • https://cdn.shopify.com/s/files/1/0434/9480/1568/files/mugomasebikebitezulus.pdf
    • https://cdn.shopify.com/s/files/1/0432/5038/5051/files/53670156182.pdf
    • https://cdn.shopify.com/s/files/1/0433/7909/7758/files/gozawudiparosid.pdf
    • https://cdn.shopify.com/s/files/1/0430/8362/8697/files/63166446314.pdf
    • https://cdn.shopify.com/s/files/1/0431/1410/2950/files/caterpillar_forklift_parts_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/5666/0633/files/xawukalonukujisibexiteru.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_off000044df.bin
227ca1d5eb18d1e7a25177cb0ae6607f7893ef169e16c64eabfb86485cc04692		 pdf-font-stream PDF embedded font (sfnt) at offset 0x44DF 5592 bytes
font_01_sfnt_off000057ad.bin
77a75e05e0cdce71b9015dd2db33517f94622f07a398ca5ad1974f06f84aba21		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57AD 8704 bytes

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