Malicious PDF — malware analysis report

Static analysis result for SHA-256 14b8663ff5553c94…

MALICIOUS

PDF

44.0 KB Created: 2020-08-30 05:59:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 50f647e86f41c69fcce5b3287944b0bd SHA-1: df14bf2bc487f057d75c8305cf1fafb6ce8abb8f SHA-256: 14b8663ff5553c948e32b1b04320327e4ec3cebb21b37428a4aeb3ae313466bd
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a link to a known malicious redirector, disguised as a download for free software. This redirector likely serves as a gateway to further malicious content or malware. The document also contains a large number of links to other PDFs hosted on Shopify, potentially for SEO manipulation or to obscure the malicious link.

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.link/wix?keyword=ulead+download+free+windows+7
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/0928/6050/files/koxebi.pdf
    • https://cdn.shopify.com/s/files/1/0447/6187/4583/files/jeep_parts_catalog.pdf
    • https://cdn.shopify.com/s/files/1/0432/6123/1262/files/tidisexuxomogulip.pdf
    • https://cdn.shopify.com/s/files/1/0429/5812/7270/files/96053578641.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/lipidelinopopobolipaxadek.pdf
    • https://cdn.shopify.com/s/files/1/0432/1237/4174/files/14634908239.pdf
    • https://cdn.shopify.com/s/files/1/0428/5969/2191/files/58113364560.pdf
    • https://cdn.shopify.com/s/files/1/0434/6806/2872/files/40115419416.pdf
    • https://cdn.shopify.com/s/files/1/0462/6887/4903/files/87326606374.pdf
    • https://cdn.shopify.com/s/files/1/0432/6404/9318/files/gexifigorobozeromisaribub.pdf
    • https://cdn.shopify.com/s/files/1/0435/2180/2392/files/ipl_2020_schedule_download_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7301/9797/files/new_bollywood_movies_hd_filmyzilla.pdf
    • https://cdn.shopify.com/s/files/1/0463/3460/7522/files/gofesorezejixewuginalego.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d43.bin
dbc3ef8988764f880e0f1ecbf20184197041e509885a94a27697edc1f1097881
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D43 4772 bytes
font_01_sfnt_off00006d9c.bin
fbd2cfba477dc798b6e62fda76311d96e88ef5541724f8fe082f41355b160fee
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D9C 11836 bytes
font_02_sfnt_off00009510.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0x9510 4324 bytes