Malicious PDF — malware analysis report

Static analysis result for SHA-256 acca13493e31fe01…

MALICIOUS

PDF

52.0 KB Created: 2020-07-26 15:32:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e82eeb8788f92eed77bed252e01b3cc5 SHA-1: 39a5d0ced395df59dedf4a515fe3f2253aee159a SHA-256: acca13493e31fe01d96da1929c99251d010a7dd66fa6d79bae8318715250c8af
130 Risk Score

Malware Insights

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

The PDF file contains multiple heuristics indicating malicious intent, including a link to a known malicious redirector and a link farm of PDF files hosted on Shopify. The presence of a visual download button further supports a deceptive lure. The primary malicious URL identified is ttraff.com, which redirects to a page related to 'uc browser apkmirror'. The document body is heavily obfuscated and does not provide further context.

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.com/pify?keyword=uc+browser+apkmirror
    • http://files.bonneygirlphotography.com/uploads/1/3/2/6/132681204/sapoxorufewodod.pdf
    • http://files.allhottub.com/uploads/1/3/1/4/131409463/469ee07922c.pdf
    • http://files.qualitycollectibletreasures.com/uploads/1/3/1/4/131406649/2084638e99d06.pdf
    • https://cdn.shopi
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/nogixiwosataru.pdf
    • https://cdn.shopify.com/s/files/1/0433/9964/3286/files/tigufos.pdf
    • https://cdn.shopify.com/s/files/1/0433/5583/2469/files/10701817522.pdf
    • https://cdn.shopify.com/s/files/1/0432/8800/2710/files/29174025192.pdf
    • https://cdn.shopify.com/s/files/1/0428/3963/8179/files/15162147697.pdf
    • https://cdn.shopify.com/s/files/1/0430/5544/8213/files/tazojuxotuligoxobare.pdf
    • https://cdn.shopify.com/s/files/1/0439/1269/1867/files/xavisolowadojovom.pdf
    • https://cdn.shopify.com/s/files/1/0428/3373/9932/files/17356438179.pdf
    • https://cdn.shopify.com/s/files/1/0427/9320/5916/files/gezodifoposodegefot.pdf
    • https://cdn.shopify.com/s/files/1/0430/0147/9321/files/saruledelosusofimaxetikaf.pdf
    • https://cdn.shopify.com/s/files/1/0431/6862/8887/files/96822410594.pdf
    • https://cdn.shopify.com/s/files/1/0434/4463/3750/files/mizadetil.pdf
    • https://cdn.shopify.com/s/files/1/0429/6091/2537/files/78293355740.pdf
    • https://cdn.shopify.com/s/files/1/0431/5843/8056/files/jikixobekozazuwonagov.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000078a5.bin
a74d93c847d960661f598fc460853e175a44a14be44eed9e96fa4a7b56dca060
pdf-font-stream PDF embedded font (sfnt) at offset 0x78A5 4936 bytes
font_01_sfnt_off00008975.bin
7674dd3a5b9540fc883e36e502f1806f2661afdc5b437ba2dddd660ba94411c0
pdf-font-stream PDF embedded font (sfnt) at offset 0x8975 10260 bytes
font_02_sfnt_off0000acab.bin
7fd64535976a653b4736ad1585a75217cf0a564ac44b6981ec5f997e3b90ecea
pdf-font-stream PDF embedded font (sfnt) at offset 0xACAB 16204 bytes