Malicious PDF — malware analysis report

Static analysis result for SHA-256 54d282b66a833bb3…

MALICIOUS

PDF

44.7 KB Created: 2020-08-30 03:37:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e22ff0d70cd2d244c0b4af3742ac5035 SHA-1: 7458788c505662177fa98cd207d88ad60e03e0b4 SHA-256: 54d282b66a833bb388e49f737145b1a2c7cec7f8b37b78131671a975f7287fed
154 Risk Score

Malware Insights

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

The PDF document was flagged as malicious due to a critical heuristic identifying it as a redirector link to known malicious infrastructure. It also contains a PDF link farm, suggesting an attempt to obscure the final malicious destination. The embedded URL https://ttraff.ru/wix?keyword=10921+wilshire+blvd is the primary indicator of malicious intent, likely serving as a lure or redirector. No scripts were extracted, but the structure and heuristics strongly suggest a phishing or malware delivery attempt.

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.ru/wix?keyword=10921+wilshire+blvd
    • https://static.usrfiles.com/ugd/b65acf_ec3b45c9e62d4adfb4f483ff8afee88f.pdf
    • https://static.usrfiles.com/ugd/ab0441_ae64c3c607c14543b8235ff4e01f9f67.pdf
    • https://static.usrfiles.com/ugd/b7306e_88f1275e8730439eb6ab57323ba82adb.pdf
    • https://static.usrfiles.com/ugd/0df15e_5ac42078d8c440adb1dd8c25781d8a68.pdf
    • https://static.usrfiles.com/ugd/b8c837_57c7de3b0d364c1fbf8deb0b00ac6e9d.pdf
    • https://static.usrfiles.com/ugd/d5cf39_912d67f28e4641b2801a1796e1e2eadf.pdf
    • https://static.usrfiles.com/ugd/6f53d7_f379775c156a43d79997fe1d756022f0.pdf
    • https://static.usrfiles.com/ugd/078c79_a1b93b26e11941dfbaa6c9cbf3101700.pdf
    • https://static.usrfiles.com/ugd/dd4472_b87f43f878dd469aade708be9692a014.pdf
    • https://cdn.shopify.com/s/files/1/0461/5392/4771/files/taco_party_invitation_template_free.pdf
    • https://cdn.shopify.com/s/files/1/0427/5165/6102/files/60408952446.pdf
    • https://cdn.shopify.com/s/files/1/0430/8631/5671/files/62653632023.pdf
    • https://cdn.shopify.com/s/files/1/0431/9959/4656/files/gewesidenowazugupidi.pdf
    • https://cdn.shopify.com/s/files/1/0434/5466/0758/files/bukoneropuzonexilotilukid.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_off00005399.bin
8d99d7e08f13c1f95768153a8bcca67c6c9010cb868410efb69d0f0c2dc5f00b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5399 1692 bytes
font_01_sfnt_off00005bf3.bin
569d2afedb7bcd03a94aae046640910a0a14478bf9f14c479a085862e2a0ed68		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BF3 5380 bytes
font_02_sfnt_off00006e41.bin
42f928389dcb3065cf2ab2b01457fba17550cc539eebaaab7a26009f18a63db2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E41 3948 bytes
font_03_sfnt_off00007a0a.bin
5fc32ac0f6050abe221ffde39fc7542014e0ea2e9b6fa931a04fd9487a879dc0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A0A 13540 bytes

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